Please include the specifications of the order 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 specification.
(ex. Vivo V15, 128gb, 6gb RAM, Coral Red) (ex. BT HF PRO SY BT1607, Red) 
 
* Version: 3.0 + EDR
* Frequency response: 100HZ-20KHZ
* Output: 3W x 2
* SNR: 80db. Battery: 3.7V / 1200mAh *
Charging voltage: 5VMP3 Speaker USB