diff --git a/infinitime.go b/infinitime.go
index d92b189..e07f831 100644
--- a/infinitime.go
+++ b/infinitime.go
@@ -698,7 +698,9 @@ func (i *Device) WatchMotion(ctx context.Context) (<-chan MotionValues, error) {
 	return out, nil
 }
 
-// SetTime sets the watch's time using the Current Time Service
+// SetTime sets the watch's
+// * time using the Current Time Service's current time characteristic
+// * timezone information using the CTS's local time characteristic
 func (i *Device) SetTime(t time.Time) error {
 	if err := i.checkStatus(i.currentTimeChar, CurrentTimeChar); err != nil {
 		return err
@@ -713,24 +715,38 @@ func (i *Device) SetTime(t time.Time) error {
 	binary.Write(buf, binary.LittleEndian, uint8(t.Weekday()))
 	binary.Write(buf, binary.LittleEndian, uint8((t.Nanosecond()/1000)/1e6*256))
 	binary.Write(buf, binary.LittleEndian, uint8(0b0001))
-	return i.currentTimeChar.WriteValue(buf.Bytes(), nil)
-}
-
-// SetTimezone sets the watch's timezone information using the Local Time Service
-func (i *Device) SetTimezone(t time.Time) error {
-	if err := i.checkStatus(i.localTimeChar, LocalTimeChar); err != nil {
+	if err := i.currentTimeChar.WriteValue(buf.Bytes(), nil); err != nil {
 		return err
 	}
+
+	if err := i.checkStatus(i.localTimeChar, LocalTimeChar); err != nil {
+		// this characteristic might not be there in older versions of infinitime
+		// so we fail silently in this case.
+		_, notAvailable := err.(ErrCharNotAvail)
+		if notAvailable {
+			log.Warn().Msg("No Local Time Characteristic detected. Old Version of Infinitime (pre 1.10.0)?")
+			return nil
+		} else {
+			return err
+		}
+	}
 	_, offset := t.Zone()
 	dst := 0
+
+	// Local time expects two values: the timezone offset and the dst offset, both
+	// expressed in quarters of an hour.
+	// Timezone offset is to be constant over DST, with dst offset holding the offset != 0
+	// when DST is in effect.
+	// As there is no standard way in go to get the actual dst offset, we assume it to be 1h
+	// when DST is in effect
 	if t.IsDST() {
 		dst = 3600
 		offset -= 3600
 	}
-	buf := &bytes.Buffer{}
-	binary.Write(buf, binary.LittleEndian, uint8(offset / 3600 * 4))
-	binary.Write(buf, binary.LittleEndian, uint8(dst / 3600 * 4))
-	return i.localTimeChar.WriteValue(buf.Bytes(), nil)
+	bufTz := &bytes.Buffer{}
+	binary.Write(bufTz, binary.LittleEndian, uint8(offset / 3600 * 4))
+	binary.Write(bufTz, binary.LittleEndian, uint8(dst / 3600 * 4))
+	return i.localTimeChar.WriteValue(bufTz.Bytes(), nil)
 }
 
 // Notify sends a notification to InfiniTime via