Come and see our amazing products. Bluetooth 5.0 master control chip, support handsfree date connection in 10m. Can talk, listening to music. Built-in DSP audio processing system, can be a very good eliminate Noise and echo, to ensure clear communication, and music. Super Mini design earphone hidden in the ear, Small and light, stealth design. Standby Time: about 100-150 hours.Your logo is welcome. Price for over 3000pcs is for sea shipment. Pls confirm further with us if any query about packing info, inventory status and time schedule.