SMART LIGHTWEIGHT SCALE Maximum weight: 100kg/220lb Resolution: 5g/0.18oz Accuracy:±0.05%rdg±10g Unit: kg g; lb oz Battery lifetime: Handle: 6H; Scale: 50H(without using reverse charging function) Power supply:  Handle: 2500mAh lithium battery              Scale: 5000mAh lithium battery Operating temperature: -20~70℃/-4~158℉ Storage temperature: -30~85℃/-22~158℉ Relative humidity : 50-85%HR Wireless transmission distance: 30m/98ft Product size: 246*246*57.5 mm/9.7*9.7*2.3 inch Weight:  2.1 kg/4.6 lb Display: 4-inch touch screen