Remax - RB-S3 BT4.1 Clip-On Stereo Wireless Bluetooth In-Ear Earbud Earphone / Headphone and Receiver with Handsfree Microphone Compatible with iPhone, Android and More (Black) Remax USA Bluetooth: Latest Advanced Bluetooth version V4.1supporting HSP/ HFP/ A2DP/ AVRCP profiles, more power saving and faster transmission speed, with wireless connection distance up to 10 meters Besides, with 300-hour standby time and 8-hour conversation time, you no need to worry about the using time Hands free: Built-in high sensitivity microphone with HD-Voice and Noise cancellation DSP technology delivers Crystal clear call quality CLIP-ON DESIGN: Act as Not only Bluetooth ear buds, but also a mini Bluetooth receiver; the Bluetooth receiver compatible with all audio devices with 3.5mm interface. The back metal clip of Bluetooth receiver can rotate 360 degrees to fit the most suitable position around your collar or pocket FM radio: The built-in FM module covers a full frequency of 87.5-108MHZ. FM radio is available only when 3.5mm wired earbud is inserted; Extend earphone cable as long as possible to enhance wireless signals Wireless photograph When Bluetooth headset and phone connect wireless