Offering exact data on bike speed, covered distance, trip time, wheel rotation frequency and the calories burnt as you take to the road, the Eco-friendly Calorie Cycle Speedometer will sure become an inseparable part of your trekking gear. A dual mode power system that runs on solar power and a single 3V CR2032 battery powers this $19.69 device.
eco speedometer
A built-in clock displays time in 12 and 24-hour format. To keep things simple, only three buttons – Set, Mode and Reset are there. If you feel like working out during dark, a night light allows you to do so.
Via: CoolestGadgets
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