Features: 1. Wireless charging bin design (all-round wireless life), 4 mic noise reduction (currently for Jabra is 4 mic noise reduction).  2. Perfect audio curve, sound effect is comparable for SENHHEISER I0S.  3. Ergonomic in-ear design, standard 7 pairs of earmuffs, all-round compatible with European, American, Asian and African ears. 4. Heavy metal plating process, different high-level feeling.  5. For QCC3020 Bluetooth solution.  6. Perfect electrical performance: 4*8H=32 hours battery life, bilateral calls, take out the automatic matching link of the charging bin, Bluetooth 5.0 powerful Bluetooth signal.     Specifications: Color:Grey, Coffee, Purple, Red, Silver, Orange;  Wearing Type:In-ear;  Material:ABS+ PC;  Technical Parameters;  Microphone:4 mic noise reduction;  Bluetooth Chip:QCC3020;  Bluetooth Version:V5.0;  Transmission Distance:10M;  Bluetooth records:A2DP/ avrps /HFP/HSP;  Receive Sensitivity:120dB;  Impedance:32Ω;  Frequency Response:20-20kHz;  Battery Capacity:Charging box: 750mAh, 3.7V;  Earphone: 50mAh*2, 3.7V;  Charging Time (h):1h; ;  Working Time (h):8h/ 32h (with charging box);     Package  Included: 1*TWS Wireless Bluetooth 5.0 Earphone with Charging Box;  1*USB Charging Cable;  6 pairs of eartips;  1* Manual