Bought to use with my Rider 310, I couldn't connect it at first, nothing showed up on the 310, very similar to one of the reviews above. As soon as I start recording my exercise, it is immediately displayed on the bike computer. So if you can't connect right away, try recording on your 310 and everything will work fine after that.
Impressive IPROVEN BPM-417 - Digital Wrist Blood Pressure Monitor For Home Use - Large Cuff And Heart Rate Monitor - Real-Time BP Reading With Wrist Guide, Movement Sensor, And Backlight
42 Review
Smart bracelet Xiaomi Mi Smart Band 5 Global, black
244 Review
Fast & Accurate Digital Ear Thermometer For Adults, Kids & Babies - IProven DMT-511 [Forehead & Ear Mode, LED Display, Fever Alarm And 35 Memory Slots]
44 Review
Track Your Oxygen Levels And Heart Rate With IProven Fingertip Pulse Oximeter β Includes Battery, Case, And Lanyard In Blue
49 Review