1. Neutral line identification: the green light is always on2. FireWire identification: the traffic lights are highlighted at the same time3. Sensitive touch pole: when the tip of the pen touches the line, measure 4. Put your hand on the touch pole5. Stretch spring: good elasticity, precise carton up and down the metal6. Button battery: put in 3 pieces of LR41 button battery7. Resistor chip: intelligent circuit board, sensitive and stable8. Slotted batch head: alloy steel material, strong and durable9. Smart chip motherboard, high safety performance, longer life10. Eye-catching bright LED lamp beads, durable11. Dimensions: 140x20mmSpecification: Package Weight One Package Weight 0.05kgs / 0.12lb One Package Size 17cm * 5cm * 4cm / 6.69inch * 1.97inch * 1.57inch Qty per Carton 500 Carton Weight 27.00kgs / 59.52lb Carton Size 50cm * 50cm * 54cm / 19.69inch * 19.69inch * 21.26inch Loading Container 20GP: 197 cartons * 500 pcs = 98500 pcs 40HQ: 458 cartons * 500 pcs = 229000 pcs