Features: --Digital display,easy reading; --In light weight,small size,easy to carry; --Unit display: N, Lb, Kg --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. Technical Specifications: --The max. Load value: 100N/ 10kg/ 22Lb --Load Value Resolution: 0.1N/ 0.01KG/ 0.01Lb --The sensor: Sensor inside --Precision: 0.5% --Power: 3.7V lithium battery --Charging time: 4~6 hours --Continuous usage time of battery: About 15 hours --Battery life: 300 times --Charger: Input: AC100~240V 50-60Hz; Output: DC 5V 1000mA --Working temperature: 5~35 --Transportation temperature: -10~60 --Relative humidity: 15%~80%RH --Work environment: No focus ,Non-corrosive in surroundings --Item dimension: 160x60x35mm --Item weight: 260g (not including battery and charger) --Package weight: 672g