Features: Bluetooth 5. 0 chip provides wide compatibility, faster and more stable wireless connection. It also supports TF card music playback and can be used as 3. 5mm wired headphone. Fully adaptive noise cancellation technology, actively blocks ambient noise for clear sound quality. Hi- Fi driver units bring extraordinary listening experience, achieve ultra- low distortion across the entire audible range. Adjustable head beam and soft ear muffs rest comfortably on your ears. Specification: Bluetooth version: 5. 0 Transmission range: 10 meters Wireless frequency: 2. 402- 2. 480GHz Output power: 15mW* 2 SNR: 88dB Battery capacity: 400mAh Music time: up to 12 hours Material: ABS Color: Black, Silver, Rose gold Note: Please allow 1- 3cm ( 0. 4- 1. 18" ) difference due to manual measurement and slight color variation for different display setting. 1* Bluetooth headset 1* Charging cable About this item Bluetooth 5.0 chip provides wide compatibility, faster and more stable wireless connection. Adjustable head beam and soft ear muffs rest comfortably on your ears. Fully adaptive noise cancellation technology, actively blocks ambient noise for clear sound quality. It also supports TF card music playback and can be used as 3.5mm wired headphone. Hi-Fi driver units bring extraordinary listening experience, achieve ultra-low distortion across the entire audible range. Bluetooth 5.0 chip provides wide compatibility, faster and more stable wireless connection. Adjustable head beam and soft ear muffs rest comfortably on your ears. Fully adaptive noise cancellation technology, actively blocks ambient noise for clear sound quality. It also supports TF card music playback and can be used as 3.5mm wired headphone. Hi-Fi driver units bring extraordinary listening experience, achieve ultra-low distortion across the entire audible range.