Bluetooth version: V 4.1
Bluetooth mode: Hands free/Headset/AV/AV RCP profile
Radio frequency: 2.4GHz
Transmission power: Class2
Transmission range: 10 meters
Charger power supply: AC input DC output 5V 110-240V
Music time: about 4H
Talktime: about 5H
Standby time: about 140H
Noise cancelling Bluetooth earphone
Ear shape design, perfect match with your ear, comfortable
Reject call function
Connect automatically
Stereo music with best sound
Waterproof
Colors: black+black/black+green/white+white/white+black/white+gold