Details：
Stainless steel -16 positions - four sets of buttons on the right side (hands-free, dispatch, group call, replay)

Details：
12-digit 304 stainless steel button

Details：
Zinc alloy-16 bit-four sets of custom blank keys on the right

Details：
Zinc alloy 16-bit keypad, up and down arrows on the right, ok return key

Details：
Zinc alloy-16 digits-Alipay on the right, WeChat, ok key, return key

Details：
ABS plastic-16 digits-right letter ABCD