About this productThis product is supplied without a charging adaptor. The required output of a suitable charging device is 2.5W minimum and 5W maximum. This product does not support PD fast charging (harmonised fast charging). K4 version 2 has full-size functionality in a compact design with 100 necessary keys. The hot-swappable option with preinstalled Gateron Mechanical switches offers the freedom to customise per-key typing experience without soldering. Connects with up to 3 devices via Blue