long working time Bluetooth4.1 low energy brings 1625hrs standby/40hrs music/45hrs talk
Voice prompt in 4 languages voicep pronpt selection switch onthe headset,press MF button and Vol button atthe same time，to select English/French/Spanish
Noise Reduction Echo cancellation dffectixely reduce noise around you，restoring crystsl -clear calls
Audio In / Out (3.5 mm jack) Line In: When using an audio cable, the headset still operates when the battery is low. Line Out: In Bluetooth mode, connect other audio devices (headphones / speakers) to the headset.
Comfortable wearing: Custom fit supra-aural soft earmuffs, artificial protein leather of earmuffs simulated to human skin texture, ensure long lasting comfort in various rugged circumstances
LEDONG Bluedio HT Turbo Wireless Bluetooth 4.1 Stereo Headphones Ultra-Long Life Sound (Black) - B0787T1MKV