Brand Name: SCELTECH Style: Tws in-ear headphones Vocalism Principle: Balanced Armature Origin: Mainland China Material: Plastic Communication: Wireless Volume Control: Yes Category: Earphones & Headphones Number Of Drivers: 2 Impedance Range: up to 32 Ω Headphone Pads Material: Silicone Active Noise-Cancellation: Yes Sound Isolating: Yes Waterproof: No Frequency Response Range: 20 - 20000 Magnet Type: Ferrite Voice assistant built-in: No Wireless Type: Bluetooth Package List: User Manual Package List: Charging case Package List: Charging Cable Connectors: USB Bluetooth Version: 5.3 Charging Method: Charging case Function: For Internet Bar Function: for Video Game Function: Common Headphone Function: For Mobile Phone Function: HiFi Headphone Function: Sport Function: For Outdoor Function: For Office Function: For DJ Function: For Study Battery Capacity[mAh]: 500 Maximum wireless range[m]: <10m With Microphone: Yes Features: With microphone Choice: yes semi_Choice: yes