electric scale 1,LED/LCD display 2,Ultha-thin indicator 3.Built-in 3.7V rechargeable lithum battery Product DescriptionElectronic Balance/Prcision Scale *high precision strain gauge load cell *Cast aluminum base *Rugged construction with stainless steel platform and spill ring *AC or battery operated (50 hours of portable weighing) *Sealed front panels *Six standard and one custom weighing unit *Easy 6-button operation *Auto-zero tracking *Auto-calibration.