diff --git a/Makefile b/Makefile
index e758fa4..ee168c2 100644
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,7 @@ LIBDIR=$(PREFIX)/lib
 MANDIR=$(PREFIX)/man
 INCDIR=$(PREFIX)/include
 
-PORT = /dev/ttyUSB1
+PORT = /dev/ttyACM1
 
 CC = gcc
 CPPFLAGS = -DBINDIR=\"$(BINDIR)\" -DPORT=\"$(PORT)\"
diff --git a/datalink.h b/datalink.h
index ab6f2d7..d14eeae 100644
--- a/datalink.h
+++ b/datalink.h
@@ -212,10 +212,11 @@ typedef struct watch_info_s
 
 /* Watch types */
 #define NO_WATCH 0
-#define DATALINK_70 1
-#define DATALINK_150 2
-#define DATALINK_150S 3
-#define DATALINK_IRONMAN 4
+#define DATALINK_50 1
+#define DATALINK_70 2
+#define DATALINK_150 3
+#define DATALINK_150S 4
+#define DATALINK_IRONMAN 5
 
 #define DEF_LPTRANSINFO 1
 
diff --git a/dl_init_watch.c b/dl_init_watch.c
index 9cfc929..9e88500 100644
--- a/dl_init_watch.c
+++ b/dl_init_watch.c
@@ -62,6 +62,32 @@ WatchInfoPtr dl_init_watch(int type)
 
 	switch (type)
 	{
+	case DATALINK_50:
+		result->dl_device = type;
+		result->max_tz = 2;
+		result->max_alarms = 5;
+		result->max_chrons = 0;
+		result->max_chron_str = 0;
+		result->max_apps = 255;
+		result->max_phones = 255;
+		result->max_timers = 0;
+		result->max_todos = 255;
+		result->max_annivs = 255;
+		result->max_system = 1;
+		result->max_wristapp = 0;
+		result->max_melody = 0;
+		result->max_tzlen = 3;
+		result->max_mem = 850;
+		result->mem_size = 0;
+		result->max_str = 15;
+		result->max_alarm_str = 8;
+		result->max_phone_str = 12;
+		result->max_timer_str = 0;
+		result->max_wristapp_len = 0;
+		result->max_mel_len = 0;
+		result->pre_notification_time = 0;
+		result->time_adjust = 9;
+		break;
 	case DATALINK_70:
 		result->dl_device = type;
 		result->max_tz = 2;
diff --git a/dl_send_data.c b/dl_send_data.c
index 94f93e7..1ccbcf0 100644
--- a/dl_send_data.c
+++ b/dl_send_data.c
@@ -99,19 +99,18 @@ int _write_data(int fd, unsigned char *buf, unsigned char *data, int size,
 
 		memcpy(buf, dspace, *dspace);
 
-#if 1
-		buf[0] = 0x3;
-#endif
+		if (wi->dl_device == DATALINK_50) 
+			buf[0] = 0x3;
 
-		if (wi->dl_device == DATALINK_70)
+		if ((wi->dl_device == DATALINK_50) || (wi->dl_device == DATALINK_70))
 			buf[1] = DATA_70;
 
-#if 0
-		buf[2] = type;
-		buf[3] = (*pnum)++;
-#else
-		buf[2] = (*pnum)++;
-#endif
+		if (wi->dl_device == DATALINK_50) {
+			buf[2] = (*pnum)++;
+		} else {
+			buf[2] = type;
+			buf[3] = (*pnum)++;
+		}
 	}
 
 	if (!size)
@@ -221,7 +220,7 @@ int dl_send_data(WatchInfoPtr wi, int type)
 
 	memcpy(buf, start1, *start1);
 
-	if (wi->dl_device == DATALINK_70)
+	if ((wi->dl_device == DATALINK_50) || (wi->dl_device == DATALINK_70))
 	{
 		buf[4] = 1;
 	}
@@ -259,9 +258,8 @@ int dl_send_data(WatchInfoPtr wi, int type)
 	for (i = 0; i < dl_download_data.num_times; i++)
 	{
 		memcpy(buf, time, *time);
-#if 1
-		buf[0] = 0xd;
-#endif
+		if (wi->dl_device == DATALINK_50)
+			buf[0] = 0xd;
 
 		p = 2;
 		if (wi->dl_device == DATALINK_IRONMAN)
@@ -285,29 +283,29 @@ int dl_send_data(WatchInfoPtr wi, int type)
 			buf[p++] = dl_download_data.times[i].year;
 			buf[p++] = dl_download_data.times[i].dow;
 			buf[p++] = dl_download_data.times[i].seconds;
-		} else
-		{
+		} else {
 			buf[p++] = dl_download_data.times[i].hours;
 			buf[p++] = dl_download_data.times[i].minutes;
 			buf[p++] = dl_download_data.times[i].month;
 			buf[p++] = dl_download_data.times[i].day;
 			buf[p++] = dl_download_data.times[i].year;
-#if 0
-			buf[p++] =
-			    dl_pack_char(dl_download_data.
-					 times[i].label[0]);
-			buf[p++] =
-			    dl_pack_char(dl_download_data.
-					 times[i].label[1]);
-			buf[p++] =
-			    dl_pack_char(dl_download_data.
-					 times[i].label[2]);
-			buf[p++] = dl_download_data.times[i].dow - 1;
-#else
-			buf[p++] = dl_download_data.times[i].dow;
-			buf[p++] = dl_download_data.times[i].seconds;
-			buf[p++] = dl_download_data.times[i].hour_fmt;
-#endif
+
+			if (wi->dl_device == DATALINK_50) {
+				buf[p++] = dl_download_data.times[i].dow;
+				buf[p++] = dl_download_data.times[i].seconds;
+				buf[p++] = dl_download_data.times[i].hour_fmt;
+			} else {
+				buf[p++] =
+				    dl_pack_char(dl_download_data.
+						 times[i].label[0]);
+				buf[p++] =
+				    dl_pack_char(dl_download_data.
+						 times[i].label[1]);
+				buf[p++] =
+				    dl_pack_char(dl_download_data.
+						 times[i].label[2]);
+				buf[p++] = dl_download_data.times[i].dow - 1;
+			}
 		}
 
 		if (wi->dl_device == DATALINK_150 ||
@@ -319,7 +317,7 @@ int dl_send_data(WatchInfoPtr wi, int type)
 			    dl_download_data.times[i].date_fmt & 0xFF;
 		}
 
-		if (wi->dl_device == DATALINK_70)
+		if ((wi->dl_device == DATALINK_50) || (wi->dl_device == DATALINK_70))
 			buf[1] = TIME_70;
 
 		dl_docrc(buf);
@@ -332,18 +330,19 @@ int dl_send_data(WatchInfoPtr wi, int type)
 
 	if (wi->dl_device != DATALINK_IRONMAN && dl_download_data.memory)
 	{
-#if 0
-		memcpy(buf, dstart, *dstart);
-		buf[2] = 1;
-#else
-		buf[0] = 0x05;
-		buf[1] = 0x60;
-		buf[2] = dl_download_data.memory / (MAX_PCKT - 6);
+		if (wi->dl_device == DATALINK_50) {
+			buf[0] = 0x05;
+			buf[1] = 0x60;
+			buf[2] = dl_download_data.memory / (MAX_PCKT - 6);
 
-		if (dl_download_data.memory % (MAX_PCKT - 6))
+			if (dl_download_data.memory % (MAX_PCKT - 6))
+				buf[2]++;
 			buf[2]++;
-		buf[2]++;
-#endif
+		} else {
+			memcpy(buf, dstart, *dstart);
+			buf[2] = 1;
+		}
+
 		dl_docrc(buf);
 
 		if (write(ofd, buf, *buf) != *buf)
@@ -351,61 +350,60 @@ int dl_send_data(WatchInfoPtr wi, int type)
 				("Can't write dstart to tmp file."));
 
 
-#if 0
-		memcpy(buf, dinfo, *dinfo);
-		buf[2] = 1;
-		buf[3] = dl_download_data.memory / (MAX_PCKT - 6);
-
-		if (dl_download_data.memory % (MAX_PCKT - 6))
-			buf[3]++;
+		if (wi->dl_device == DATALINK_50) {
+			pnum=1;
 
-		buf[12] = dl_download_data.num_apps;
-		buf[13] = dl_download_data.num_todos;
-		buf[14] = dl_download_data.num_phones;
-		buf[15] = dl_download_data.num_annivs;
-		buf[4] = (addr >> 8) & 0xff;
-		buf[5] = addr & 0xff;
-		addr += dl_download_data.app_size;
-		buf[6] = (addr >> 8) & 0xff;
-		buf[7] = addr & 0xff;
-		addr += dl_download_data.todo_size;
-		buf[8] = (addr >> 8) & 0xff;
-		buf[9] = addr & 0xff;
-		addr += dl_download_data.phone_size;
-		buf[10] = (addr >> 8) & 0xff;
-		buf[11] = addr & 0xff;
-		buf[16] = 0x62;
-		buf[17] = dl_download_data.pre_notification_time / 5;
-		if (!buf[17])
-			buf[17] = 0xff;
-
-		if (wi->dl_device == DATALINK_70)
-			buf[1] = DATA_70;
-#else
-
-		pnum=1;
-
-		buf[0] = 0x13;
-		buf[1] = 0x61;
-		buf[2] = pnum;
-		buf[3] = (addr >> 8) & 0xff;
-		buf[4] = addr & 0xff;
-		addr += dl_download_data.app_size;
-		buf[5] = (addr >> 8) & 0xff;
-		buf[6] = addr & 0xff;
-		addr += dl_download_data.todo_size;
-		buf[7] = (addr >> 8) & 0xff;
-		buf[8] = addr & 0xff;
-		addr += dl_download_data.phone_size;
-		buf[9] = (addr >> 8) & 0xff;
-		buf[10] = addr & 0xff;
-		buf[11] = dl_download_data.num_apps;
-		buf[12] = dl_download_data.num_todos;
-		buf[13] = dl_download_data.num_phones;
-		buf[14] = dl_download_data.num_annivs;
-		buf[15] = 0x00;
-		buf[16] = 0x03;
-#endif
+			buf[0] = 0x13;
+			buf[1] = 0x61;
+			buf[2] = pnum;
+			buf[3] = (addr >> 8) & 0xff;
+			buf[4] = addr & 0xff;
+			addr += dl_download_data.app_size;
+			buf[5] = (addr >> 8) & 0xff;
+			buf[6] = addr & 0xff;
+			addr += dl_download_data.todo_size;
+			buf[7] = (addr >> 8) & 0xff;
+			buf[8] = addr & 0xff;
+			addr += dl_download_data.phone_size;
+			buf[9] = (addr >> 8) & 0xff;
+			buf[10] = addr & 0xff;
+			buf[11] = dl_download_data.num_apps;
+			buf[12] = dl_download_data.num_todos;
+			buf[13] = dl_download_data.num_phones;
+			buf[14] = dl_download_data.num_annivs;
+			buf[15] = 0x00;
+			buf[16] = 0x03;
+		} else {
+			memcpy(buf, dinfo, *dinfo);
+			buf[2] = 1;
+			buf[3] = dl_download_data.memory / (MAX_PCKT - 6);
+
+			if (dl_download_data.memory % (MAX_PCKT - 6))
+				buf[3]++;
+
+			buf[12] = dl_download_data.num_apps;
+			buf[13] = dl_download_data.num_todos;
+			buf[14] = dl_download_data.num_phones;
+			buf[15] = dl_download_data.num_annivs;
+			buf[4] = (addr >> 8) & 0xff;
+			buf[5] = addr & 0xff;
+			addr += dl_download_data.app_size;
+			buf[6] = (addr >> 8) & 0xff;
+			buf[7] = addr & 0xff;
+			addr += dl_download_data.todo_size;
+			buf[8] = (addr >> 8) & 0xff;
+			buf[9] = addr & 0xff;
+			addr += dl_download_data.phone_size;
+			buf[10] = (addr >> 8) & 0xff;
+			buf[11] = addr & 0xff;
+			buf[16] = 0x62;
+			buf[17] = dl_download_data.pre_notification_time / 5;
+			if (!buf[17])
+				buf[17] = 0xff;
+
+			if (wi->dl_device == DATALINK_70)
+				buf[1] = DATA_70;
+		}
 
 		dl_docrc(buf);
 
@@ -413,27 +411,26 @@ int dl_send_data(WatchInfoPtr wi, int type)
 			return ((*dl_error_proc)
 				("Can't write dinfo to tmp file."));
 
-#if 0
-		pnum = 1;
-#else
-		pnum = 2;
-#endif
+		if (wi->dl_device == DATALINK_50)
+			pnum = 2;
+		else
+			pnum = 1;
+
 		memcpy(buf, dspace, *dspace);
 
-#if 1
-		buf[0] = 0x3;
-#endif
+		if (wi->dl_device == DATALINK_50) 
+			buf[0] = 0x3;
 
-		if (wi->dl_device == DATALINK_70)
+		if ((wi->dl_device == DATALINK_50) || (wi->dl_device == DATALINK_70))
 			buf[1] = DATA_70;
 
-#if 0
-		buf[2] = 1;
-		buf[3] = pnum++;
-#else
-		buf[2] = pnum++;
-#endif
-
+		if (wi->dl_device == DATALINK_50) {
+			buf[2] = pnum++;
+		} else {
+			buf[2] = 1;
+			buf[3] = pnum++;
+		}
+	
 		for (i = 0; i < dl_download_data.num_apps; i++)
 		{
 			ap = &dl_download_data.apps[i];
@@ -792,11 +789,10 @@ int dl_send_data(WatchInfoPtr wi, int type)
 
 		memcpy(buf, dspace, *dspace);
 
-#if 1
-		buf[0] = 0x3;
-#endif
+		if (wi->dl_device == DATALINK_50) 
+			buf[0] = 0x3;
 
-		if (wi->dl_device == DATALINK_70)
+		if ((wi->dl_device == DATALINK_50) || (wi->dl_device == DATALINK_70))
 			buf[1] = DATA_70;
 
 		pnum = 1;
@@ -858,11 +854,10 @@ int dl_send_data(WatchInfoPtr wi, int type)
 
 		memcpy(buf, dspace, *dspace);
 
-#if 1
-		buf[0] = 0x3;
-#endif
+		if (wi->dl_device == DATALINK_50) 
+			buf[0] = 0x3;
 
-		if (wi->dl_device == DATALINK_70)
+		if ((wi->dl_device == DATALINK_50) || (wi->dl_device == DATALINK_70))
 			buf[1] = DATA_70;
 
 		pnum = 1;
diff --git a/settime.c b/settime.c
index 3c89093..ab98990 100644
--- a/settime.c
+++ b/settime.c
@@ -117,6 +117,9 @@ int main( int argc, char ** argv)
 
 	if(argc==2)
 	{
+		if(!strcmp("-model50",argv[1])||!strcmp("-50",argv[1]))
+			wi = dl_init_watch(DATALINK_50);
+		else
 		if(!strcmp("-model70",argv[1])||!strcmp("-70",argv[1]))
 			wi = dl_init_watch(DATALINK_70);
 		else
@@ -130,7 +133,7 @@ int main( int argc, char ** argv)
 			wi = dl_init_watch(DATALINK_IRONMAN);
 		else
 		{
-			printf("Usage: %s [ -model70 | -70 | -model70 | "
+			printf("Usage: %s [ -model50 | -50 | -70 | -model70 | "
 				"-150 | -model150 | -model150s | -150s |"
 				" -ironman]\nVersion "
 				"$Id: settime.c,v 1.13 2002/07/10 04:23:23 david Exp $\n", argv[0]);
diff --git a/setwatch.c b/setwatch.c
index 93a9364..eee146b 100644
--- a/setwatch.c
+++ b/setwatch.c
@@ -120,7 +120,8 @@ void Usage()
 	printf("Usage: datalink [watch type] [options] [datafile]\n");
 	printf
 	    ("watchtype (ironman is default, must be specified before other options)\n");
-	printf("  -model70\t use if you have this watch\n");
+	printf("  -50\t use if you have this watch\n");
+	printf("  -model50\t use if you have this watch\n");
 	printf("  -70\t use if you have this watch\n");
 	printf("  -model70\t use if you have this watch\n");
 	printf("  -150\t use if you have this watch\n");
@@ -199,6 +200,7 @@ void Usage()
 #define CHRON		0x400
 
 /* All would be 0x755 */
+#define ALL50		0x07F
 #define ALL70		0x07F
 #define ALL150		0x1FF
 #define ALLIRONMAN	0x653
@@ -228,6 +230,8 @@ int main(int argc, char **argv)
 
 		if (strcmp("-all", argv[1]) == 0)
 		{
+			if (type == DATALINK_50)
+				flags = ALL50;
 			if (type == DATALINK_70)
 				flags = ALL70;
 			if (type == DATALINK_150 || type == DATALINK_150S)
@@ -300,6 +304,10 @@ int main(int argc, char **argv)
 			output = BLINK_FILE;
 		else if (strcmp("-serial", argv[1]) == 0)
 			output = SER_BLINK;
+		else if (strcmp("-model50", argv[1]) == 0)
+			type = DATALINK_50;
+		else if (strcmp("-50", argv[1]) == 0)
+			type = DATALINK_50;
 		else if (strcmp("-model70", argv[1]) == 0)
 			type = DATALINK_70;
 		else if (strcmp("-70", argv[1]) == 0)
diff --git a/svgablink.c b/svgablink.c
index 185a2ca..3e30461 100644
--- a/svgablink.c
+++ b/svgablink.c
@@ -70,10 +70,14 @@ int main(int argc, char **argv)
 			|| strcmp(argv[1], "-model70") == 0)
 			type = DATALINK_70;
 		else
+		    if (strcmp(argv[1], "-50") == 0
+			|| strcmp(argv[1], "-model50") == 0)
+			type = DATALINK_50;
+		else
 		{
 			fprintf(stderr, "Unknown option %s.\n", argv[1]);
 			fprintf(stderr, "Usage: %s [ -ironman | -modelironman | -150 | -model150 | -150s | \n"
-				"\t-model150s | -70 | -model70 ] datafile\n"
+				"\t-model150s | -70 | -model70 | -50 | -model50 ] datafile\n"
 				"Version $Id: svgablink.c,v 1.12 2002/07/10 04:27:08 david Exp $\n", argv[0]);
 			exit(-1);
 		}