CDM4 bald head 7310 display board. This version uses a 3.12 OLED screen. The display colors are white, blue, yellow, and green. You can choose to take a remark. If you don’t remark, it will be white by default.The case panel in the rendering is a top-opening case of Lianli, which is also specially developed for this case. Note that he currently has two versions of panel button spacing which are 27.5MM and 20MM respectively. I must explain to him that it is 27.5MM. You can buy from him if you need itSupport button separation (the display and buttons are provided with a V slot and a stamp hole, just fold it hard to separate and then connect the cable), which is convenient for DIY to use a variety of different cases (you need to solve it by yourself)This version has added many functions to display: single play time, entire disc play time, entire disc countdown, single loop play, full disc loop play, random play, A-B loop play, browse play. (99685 is limited to the remote control problem, only random play and full disc loop)Support ZC99696 and ZC999685 two types of MCU out-of-warehouse and top-opening. Because 99696 is in top-opening mode, it enters auto play after closing the warehouse door. No track data is returned to the track list. Incomplete display (no problem in out-of-warehouse type), 99685 All displays are perfect regardless of the out-of-stock style or the top-open style.Note: The old PCB has been sold out, and the current PCBs are all new ones. The display effect has not changed. The software MCU setting function has been changed.The default is equipped with 310 cable of 696. Please note if you choose other cables, please ask customer service if you don't know what cable to use. At the same time, the price of 2 cables is 5 yuan per cable.