1. Test distance: 40 meters 2. Battery capacity: 200mAh 3. Material: ABS + Aluminum alloy 4. Small size, easy to carry 5. A full charge is enough to measure 3500 times 6. USB interface, more convenient for charging 7. Size: 86x22x11mm 8. Weight: 28gSpecification: Package Weight One Package Weight 0.08kgs / 0.17lb One Package Size 10cm * 5cm * 2cm / 3.94inch * 1.97inch * 0.79inch Qty per Carton 180 Carton Weight 14.76kgs / 32.54lb Carton Size 30cm * 30cm * 20cm / 11.81inch * 11.81inch * 7.87inch Loading Container 20GP: 1481 cartons * 180 pcs = 266580 pcs 40HQ: 3439 cartons * 180 pcs = 619020 pcs