For iPhone, Galaxy, Huawei, Xiaomi, LG, HTC and Other Smart Phones, Working Distance: 10m

1. Bluetooth 4.1 version, 10m effective transmission distance.
2. Support hands-free, voice report calling number, vibration alert function.
3. Stereo audio transmission protocol A2DP V1.2.
4. Light and portable, fits your ears well, makes your sports more relaxed.