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HOCO EPB05 Tracker Anti-lost Wireless Bluetooth V4.1 Headphone Earphone
Compatible with most of smartphone like for xiaomi, for iPhone, for Samsung, for huawei, etc.
The headphone can connect to two devices.
Support to display battery level on for iOS system and some Android smartphones.
Has anti-lost function: The headphone will prompt you when your phone is out of 10m.