Wireless Cycle Computer

Wireless Bicycle Speedometer, Wireless Bicycle Computer, Bicycle Speedometer, the Features:
1) Clock: 12/24h format alternative
2) Speedometer with digit display & image display
3) Speed comparator
4) Average speed/maximum speed
5) Relative speed
6) Riding time/riding distance
7) Total riding distance
8) Thermometer
9) Metric or Imperial system alternative
10) Scan
11) Sensing distance: 1m (39inches)
12) Battery:
A) 1pcs A23-12V for transmitter
B) 1pcs CR2032 for receiver