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) 
 
Product Specification:
-Listen to yourself.Portable active music player.
-Bluetooth&usb&TF&FM.
-The main technical parameters
-Standard:3.0+EDR
-Transmission distant:10m
-Rated power:5w+5w
-Playing time:1-3Hours (depends on volume)
-S/N:80db
-Distortion:1%w1KHz
-Charging time:3-4Hours