Type: Bone conduction Bluetooth headsetModel: VG02Bluetooth version: 5.3Bluetooth distance: 10mBattery capacity: 180mAhStandby time: about 240HPlaying time: about 8hCharging time: about 1.5hProduct color: blackFrequency response range: 20Hz-20khzMaximum charging voltage: 5VCharging time: 1.5HWaterproof grade: IPX5 (do not touch hot water)Function: switch on/off/hang up the phone/play and pause music/voice wake up/card can be inserted 11. [Great Invention]: A conductive earphone that transmits sound in human ears through vibration. The pluggable card is designed, you can enjoy music without Bluetooth (you need to bring your own memory card). 22. [Comfort and safety]: The bone conduction headset uses Bluetooth 5.3 wireless connection, you can listen to music and answer calls without plugging the receiver into the ear canal, and the ear can hear the surrounding sounds, which is very safe. (Net weight 28g) 33. [Use scene]: Bone conduction earphones are sturdy and sweat-proof, suitable for running, cycling, fitness, hiking, rock climbing, and driving. The anti-sweat design can reduce the production of unclean substances and protect the ears. 44. [Product configuration]: Built?in 180mah lithium battery, the continuous standby time is about 240 hours, the continuous playback time can reach 8 hours, and it only takes 1.5 hours to fully charge the battery. 55. [Bone conduction Bluetooth headset]: In-ear playback, dual microphones, effectively protect your hearing, you can hear the sound of the surrounding environment when listening to songs, walking, walking, and outdoor activities are safer.