Patented Electronic Luggage scale Specification: High Precision Strain Gauge Sensors SystemCapacity: 10kg/5g, 20kg/5g, 30kg/10g, 40kg/10g, 50kg/10gUnit: g/kg/lb/oz ExchangeableLarge LCD: 38×12mm With blue backlightTare functionAuto zero-auto offData lock function with sound indication ,convenient to readover load indicationLow battery indicationPower: 3V(AAA battery-2pcs)Product size:12.2×8.5 ×2.5cmColor box size: 14.2 ×14.0 ×3.5cmCarton Size: 30.0×22.5×29.5cm 20pcs/CTNN.W.: 5.0KG/CTN, G.W.: 5.5KG/CTNLoading Qty: 33600pcs/20'GP, 69600pcs/40'GP