Please include the specifications of the product when filling up your order. On the lower part portion of product image, then click "add note" to specify your prefer color, memory and other specification.
(ex. Vivo V15, 128gb, 6gb RAM, Coral Red) (ex. BT HF PRO SY BT1607, Red) 
 
* Headphone model: SY - BT1607
* Bluetooth version: Jerry Blue tooth V 4.2
* Transmission distance: 10 meters
* Battery life: 7 - 8 hours
* Standby time: 120 hours
* Battery capacity: 240mAh rechargeable lithium battery
* Headphone function: Adjust the volume, switch songs, call, answering, call rejection, hang up, bluetooth play, hands-free call, phone replay, bluetooth back connection, voice prompt, power display, TF card function.