Strain Gauge Precision Technology Capacity :15kgx5g,30kgx5g Key Function :WEIGHT,UNIT PRICE,TOTAL PRICE Blue Back Light (optional) Features:Auto Zero,Tare,Memory,Delete,Accumulate Low-Battery Indication / Over-Load Indication Error Indication Auto / Manual Shut-Off Powered By Rechargeable Battery or AC 110V/220V 1pcs/Carton N.W.:3kg G.W.:3.5kg CTN Size:34x30.7x12.5cm 20'':2308pcs 40'':4616pcs