Bluetooth 4.1 Wireless Advanced Upgrade Module
Compatiable with KZ-ZST, upgrade your ZST to the Bluetooth version
Three buttons: Volume reduction; Volume increases; Power button

Technical Details

Product Details

Package Dimensions
Width : 3.11 inch
Height : 0.91 inch
Length : 3.11 inch

Shipping Weight: 0.8 ounce (View shipping rates and policies)

ASIN : B071KF8SP9