igpsport GPS -Enabled Bike bicycle computer speedometer SALE iGS20E iGS50E iGS618 (10 has been discontinued, please don't buy!) - Price history & Review | AliExpress Seller - ChangYe Riding Store | Alitools.io
User manual iGPSport IGS20E (English - 44 pages)
Amazon.com : iGPSPORT BSC100S Bike Computer Wireless, 2.6 Inch ANT+ Cycling Speedometer and Odometer GPS with Bluetooth, Type-C Charging and Automatic Backlight, IPX7 Waterproof Fits All Electric Bicycle (5 in 1) :