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Wireless Bicycle Speedometer Meilan M4 and S1 Taillights Tachometer Heart Rate Monitor cadence Speed Sensor Waterproof Stopwatch-in Bicycle Computer from Sports & Entertainment

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$ 46.15

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  • waterproof : IPX6
  • Working time : 40 hours
  • battery : Built-in lithium battery/860mAh
  • Connection accessories : wireless speed/cadence sensor/HR monitor/power meter
  • Transmission : BLE 4.0/ANT+
  • screen : 2.5 inch big display area screen
  • Model Number : m4
  • Stopwatch and Accessories : Wireless Stopwatch
  • Brand Name : meilan