1. The panel adopts electroplating process, metal texture, and the touch is delicate and smooth. 2. Bluetooth 5.0 chip, with faster transmission speed and longer transmission distance. 3. In-ear fit auricle design, wearing the ear for a long time does not cause pain. 4. One-click voice access, one-touch smart life. 5. Smart chip, 4 microphone noise reduction technology, call and music sound quality can not be copied. 6. Earphone battery capacity: 3.7V/60mAh. 7. Charging box battery capacity: 750mAh, support wireless charge.Specification: General Model E12 Bluetooth Version V5.0 Protocol A2DP, HSP, HFP, AVRCP Speaker Diameter 10mm Impedance 32Ohm Frequency Range 20Hz-20KHz Transmission Distance Up to 10m Charging Voltage 5V Sensitivity 120+-5dB Battery Charging Time 1 hour Talk Time up to 6 hours Music Time up to 6 hours Package Weight One Package Weight 0.30kgs / 0.66lb One Package Size 15.8cm * 15.8cm * 4.3cm / 6.22inch * 6.22inch * 1.69inch Qty per Carton 40 Carton Weight 12.30kgs / 27.12lb Carton Size 45cm * 40cm * 30cm / 17.72inch * 15.75inch * 11.81inch Loading Container 20GP: 493 cartons * 40 pcs = 19720 pcs40HQ: 1146 cartons * 40 pcs = 45840 pcs