Built-in voice assistant: Yes Maximum wireless range [meter]: Less than 10m Soundproofing: Yes Category: In-ear headphones Charging : charging box Impedance range: up to 32 Bluetooth version: 5.0 Features: Waterproof, with microphone, active noise reduction With microphone: yes Wireless: Yes Support APP: No Support memory card: No Waterproof: Yes Plug type: L-shaped bend Functions: Internet cafe use, monitoring headphones, gaming use, ordinary headphones, mobile phone use, HiFi headphones, sports use, outdoor use, swimming use, office use, sleeping use, DJ use, study use Active Noise Cancellation: Yes Volume control: yes Control buttons: yes Principle of sound production: dynamic Wireless type: Bluetooth Connector: type c Note:When purchasing the tws Bluetooth headset, please read the following instructions: Due to long-term transportation, the power of the tws earphone will be exhausted. You will not be to use the headset when you receive the package. It may be powered off. The first thing to do is to charge the headset box for 30 minutes. Very important. Thank you! Colour:Black Material:ABS Size:13.4x9x3.4cm Package Contents: 1 x earphone 1 x charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.