Specification: Model: mini Bluetooth version: 5.3 Earphone type: Ear hook Microphone: Yes Noise Reduction: Active Waterproof: Yes Playback Control: Yes In-ear mode: open clip-on Battery life: about 6 hours Noise-canceling type: ENC environmental noise-canceling Noise reduction depth: 23dB Speaker size: 13MM Audio decoding: AAC, SBC Frequency range: 50HZ-20KHZ Transmission distance: >10 meters Size: 30*30*15mm Feature: Bluetooth 5.3 Chip; Touch Control; IPX4 Waterproof; HiFi Sound; HD Call; Long endurance; Noise Reduction. Attention: Can be single or double, buy two at a time for more enjoyment. Single ear use: buy a, not divided into left and right ear, can wear, music, talk all kinds of line; Binaural use: buy two can be connected to a cell phone, enjoy three-dimensional HIFI sound; can also be a connection to a cell phone, use alone! Package includes: 1x Headset (only one) 1x pair of ear caps 1x Charging cable 1x Manual