Brand Name: HTC Style: Tws in-ear headphones Vocalism Principle: Dynamic Origin: Mainland China Audio latency: 1 Material: Plastic Speaker maximum output power: 10mW High-concerned chemical: none whether electrical: Yes Communication: WireLess Volume Control: Yes Charging Time: 2 Control Method: Touch Control Method: App Category: Earphones & Headphones Department: Unisex-adult Active Noise-Cancellation: Yes Wireless Type: Bluetooth Control Button: No Choice: yes semi_Choice: yes