I haven't been able to find info on this NS60 PCB by YDKB so I thought I would share.
The NS60 PCB has the option of north or south switch and blue tooth 2.1 that can connect with Windows and IOS, so far I have experienced no lag at all. Its also very easy to connect the Bluetooth by turning on then searching from the device. The connector for the battery is ph2.0. There are 7 under glow RGB LEDS.
Only downside is the manual install where the HIDBOOT files in the device manager had to be repeatedly deleted before the PCB was detected by HIDBootflash.exe. I installed a 1500mah battery, supposedly it is supposed to last 3-4 weeks, will update when the battery dies.