Niz 87EC(S) Pro Electrostatic Capacitive Bluetooth Keyboard - Used I'm selling this keyboard because I've switched to a low-profile keyboard. The exterior appears to be in relatively good condition, but since it's an older product, I'm listing it as untested regarding functionality. Included accessories are springs, spare parts, keycaps, and tools. I haven't used the springs, so I'm unsure if all are present or what their function is.