200N Force Tester Gauge Meter Digital Force Gauge Four Units Lb,N,Kg, Portable Pull Push Force Gauge Measuring Instrument Dynamometer ,Multiple Profile Tracking

Digital display,easy reading; In light weight,small size,easy to carry; 3.Unit display:Lb,Kg,N The battery has over-load protection in case of short circuit and leakage of electricity It also can tell you when the battery is running low. It adopt the 3.7V lithium battery and auto shut off with no operation in 10 minutes at the same time.