3.5mm AUX Bluetooth Hands Free Kit FM Transmitter

3.5mm Jack Bluetooth Car Kit Handsfree Music Audio Receiver Adapter Auto Bluetooth AUX for Speaker Headphone Car

3.5mm AUX Bluetooth Hands Free Kit FM Transmitter. 

Make any speaker or car stereo wireless by syncing the phone to the adapter which in turn acts as wireless device. You can connect your phone to the aux port of your car or home stereo wirelessly. Headphones also can become wireless through the adapter. 

Pairing timeout shutdown: shutdown after 5 minutes of pairing status

Low voltage reminder: when the voltage is less than 3.2v, it is reminded every 5 seconds, and 3.1v is off

System status:

Power off: MFB long press for 3 seconds

Volume up: short press VOL+

Volume reduction: press VOL-

Switching languages: double-click and hold MFB in the pairing state (red and blue lights flashing)

Music control:

Play pause: press MFB

Last song: VOL- press for 2 seconds

Next song: VOL+ 2 seconds

Telephone control:

Answer the phone: press MFB when calling

Reject the call: the duration of the call is MFB

Unsigned redial: double-click the MFB key, then press MFB to cancel the dialing

Led display:

Power-on pairing: red and blue lights flashing alternately

Connection status: blue light flashes slowly (5 seconds 1 time)

Low voltage: red light flashing (0.5 SEC 1)

Working current:

Status parameter (4.00v) (3.40v)

Rated operating voltage 4.00V 3.40V

Matching state current 4.33 ma-20.56 mA 4.47 ma-22.03 mA

Standby current (bluetooth connected) 0.43 ma-8.31 mA 0.41 ma-8.74 mA

Play music current 19.04 ma-23.21 mA 22.85 ma-23.74 mA

The call current is 23.82 ma-24.05 mA 25.19 ma-25.78 mA

Charging current 100.0mA. 100.0mA

Power off current 1.4uA 1.1uA