Specification:
--Wireless: V5.4
--Sensitivity: 95+-3dB
--Working Range: 10m
--Battery: 55mAh*2
--Music & Call Time: 200 hours
--Charge Time: 1 hours
--Input: 5V D.C.1A
--Water Resistant: IPX4
--Lens: TAC UV400
--Frame Material: PC
--P-rf: 6mW
--maxf: 2402-2480MHZ

Touch Tap Control:
--Power on/off: Press and hold the T for 3 seconds (left or right)
--Play or Pause Music: Double touch T button (left or right)
--Call Function: Double touch T button to answer or end calls (left or right)
--Reject Phont Call: Long touch for 3 seconds (left or right)
--Voice assistant: Touch the LEFT button 3 times to wake up your phone assistant.
--Take Photo Function: Touch the RIGHT button 3 times to take photo. (your phone's camera should be turned on first.)
--Select Music: Touch Left select last song, touch Right select next song.
--Volume Adjustment: Long - press the LEFTbutton for 1.5 seconds to increase the volume, and long - press the RIGHT button for 1.5 seconds to decrease the volume.