1. Collar clip-on design, ease of driving, release your hands. 2. Extra long talk time, up to 120 hours of music time. 3. Intelligent ENC noise reduction can make you enjoy crystal clear talking even though in the open and loud environment 4. Compatible with most smart devices with bluetooth 5.3. 5. Suitable for office, traveling, driving, metro, business, etc. Microphone:Built-in Microphone,Handsfree call Bluetooth:V5.3 Bluetooth distance:15M Standby Time:About 120 hours Playing time:120 hours Colour:Red Material:ABS Size:30mm x 62mm Package Contents: 1 set * Aux wireless audio adapter(Headphone styles are random and cannot be specified) 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.