Features 1 Transform your non bluetooth Headphone into Wireless Headphone 2 The adapter with built in Micorphone and Volume control 3 Compatible for Bose AE2 AE2i AE2w audio headphone Specification Product Name bluetooth Cable for Bose AE2Size 56x12x8mmConnector Size 2 5x10mmBlutooth Converter Length 28cmUSB Charging Cable Length 30cmColor BlackMaterial PlasticFit For For Bose AE2 AE2i AE2wbluetooth 4 1Support bluetooth HFP v1 6 HSP v1 2 A2DP v1 3 AVRCP v1 5 SPP v1 2Wireless working range 10mAudio Performance SBC MP3 AAC StereoBattery Capacity 120mAHWorking Time 8 10hours Using Guide Boot Long press the answer key to boot until hear the starting up prompt tone voice prompt boot then the blue light flashing Shutdown Long press the answer key to turn it off voice prompt to turn it off Battery Charging When charging the indicator light turns red the blue light turns means full charge VOL Long press the VOL key to increase the volume VOL Long press the VOL key to turn down the volume Switch to the previous song Short press the Vol key turn to the previous song Switch to the next song Short press the VOL key turn to the next song Music play Short press the answer key Music pause Short press the answer key Answer hang up the phone Short press the answer key Redial press twice the answer key can redial the last time calling phone number bluetooth Connection Method 1 1pcs Phone ConnectLong press the answer key to boot until hear the pa