Description Transmission range 10 meters Function power display, NFC function, voice control, support music, multi -point connection Stevid sound Ear earbud Whether or not two -sided three -dimensional sound Endurance time 5 (hour) Form FactorIn Ear Connectivity TechnologyBluetooth 5.0 1. One Step PairingYou dont need any skills to use earbuds. Pick up 2 earbuds from charging case, They will connect each other automatically, then enter mobile phone bluetooth setting to pair the earbuds. 2. Music Time Charge On The GoThanks to the Bluetooth 5.1 technology, You get 4-5H continuous playtime when earbuds fully charged. You can also use the charging case to charge your phone. Never worry about running out of power. 3. WaterproofThe bluetooth earbuds are resistant to sweat, water and rain. Ergonomically in-ear design. They are not easy to fall from ears and stay firm in place, Perfect for Sports, running, driving, workout, gym, relaxation, travelling and etc. (NOTE: The Charging case is not waterproof.) 4. Stereo Music QualitySuperb listening experience with powerful bass and exceptional detail. Get an unrivaled Sound Quality Call Clarity. Noise cancellation technology reduces ambient noise and echo, Ensure that you dont miss any part of your rhythm and enjoy music everywhere. Ideal for Christmas gift, birthday/business present, public holiday.