1) Bluetooth technology, compliant with Bluetooth specification V1. 1
2) Environment, operating temperature: -20'c to 60'c
3) Super low radiation
4) Super compatibility, so that when changing cell phones, there is no need to change headset
5) Beautiful style, according to the streamline style designed by human body engineering, delicate craftsmanship, suitable for the wearing of different people
6) Comfortable wearing, no feeling of crashing down and oppressing, it can be worn for a long time

*Our company can print customer's mark and design on the SIM Card Device or design packing as the requirements. It is the best choice for the company to do sale promotion, propagandize the company's new image, and achieve the publicity.