H366 Bluetooth 4.0 Music Audio Receiver Adapter with Hands Free Function For iPhone, Samsung, HTC, Sony, Google, Huawei, Xiaomi and other Smartphones Features 1. Delicately disc design, exquisite workmanship and mini size with lighter weight. 2. Multi-function technique, one Bluetooth receiver can connect with two Bluetooth devices. 3. High quality stereo transmission for a better music experience. 4. Reverse control of the music play of connected Bluetooth devices. 5. Safe driving design, it can be used as a Bluetooth car kit which with music play function. Music Function Operation Steps 1. Step one: Connected the H-366 with speaker by 3.5mm audio cable, long press the on-off key to start up; 2. Step two: Open Bluetooth devices e.g. smart phone, tab pc and PC, search H-366; 3. Step three: After pairing successfully, play the music wirelessly. Multi-point Connection Steps 1. Long press power key 5 seconds, cell phone 1 connected with the device successfully. 2. Long press power key 2 seconds, "beep". 3. Open Bluetooth function of cellphone 2, connect it with the device. 4. Connect the device with cellphone 1 again by manual operations. 5. The device connected with these two cell phones successfully. Remark: After Multi-point setup successfully, automatically connect with two cellphones when use again. Remark: If cellphone changed, enter pairing mode to connect again. default to connect the last two cell phones Remark: After long term use, restore factory settings when connected failure(disconnect the cellphone Bluetooth connection after restoring factory settings) Press Key Function 1. Volume +: Short press, last song; Long press, Volume plus 2. Volume -: Short press, next song; Long press, Volume decline 3. Power key: Short press, PlayPause; Double press, redial; Long press, turn onoff 4. Restore factory settings: Long press power key and volume plus key five seconds to restore factory settings(Red and blue light blink twice and with prompt tone)