Transmission range 10 metersFunction power display, NFC function, voice control, music support, multi-point connectionStereo soundHeadphonesWhether two-sided three-dimensional sound or notEndurance time 5 (hours)Form factor In-earConnectivity technology Bluetooth 5.11. One-step pairingYou don't need any knowledge to use earbuds. Take out two earbuds from the charging case. They automatically connect to each other and then call Bluetooth Mobile phone settings to pair the earbuds.2. Charge music time on the go Thanks to Bluetooth 5.1 technology, you get 4-5 hours of continuous playback time when the earbuds are fully charged. 3. WaterproofThe wireless earbuds are sweat, water and rain resistant. Ergonomic in-ear design. They don't fall out of your ears easily and stay firmly in place. Perfect for sports, running, driving, training, gym, relaxation, travel, etc. (NOTE: The charging case is not waterproof.) 4. Stereo music qualityExcellent listening experience with powerful bass and exceptional details. Get unparalleled sound quality and call clarity. Noise reduction technology reduces ambient noise and echoes. Make sure you don't miss any part of your rhythm and can enjoy music anywhere. as a Christmas gift, birthday gift, holiday gift.