Wireless Bluetooth Headset – T39, Bluetooth Headphones – T39 Wireless Headset Bluetooth, Colorful LED Bass Stereo Wireless Headphones
Has a built-in Microphone and TF card slot, noise-canceling feature, and you can use a TF/Micro SD card with loaded MP3 music and listen to the songs directly on your headsets. Is weightless, comfortable for the ears, and foldable. Go hands-free and wear it while working out at the gym or while playing sport. 
Model- T39
Bluetooth Version: V5.0
Colorful LED Light
Power Indicator: Red and blue lights alternately flashing
Headset Charging: rechargeable 400MAH lithium battery
Normal Charging Time: 2.5 hours
Standby Time: up to 20 Days
Other Features: support status indicator, charge indicator display