Beast sensor
Tech specs 
TypeThe Beast sensor is configured as a small magnet, which enables it to be easily plugged on barbells, dumbbells, kettlebells or gym machines and to the body itself for performing free body exercises with the Beast Vest.
ChargingYes
Battery lifeUp to 8 hours
Weight38 grams
Water resistance
SensorAccelerometer (3x), Gyroscope (3x), Compass (3x)
Display
Metrics 
TracksStrength, speed, power, explosiveness, volume, average power, reps, density, energy burn, set by set progress, tonnage, weekly progress.
Other
Links 
View onThisisbeast
Amazon US rating
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