2.4-G wirelessness connect single mode there not any connectors on the cases;
Botton cell battery power only,should prepare 2 pcs CR2032 botton cell extra,full battery power could keep work close to 4 months;
MX switch keyboard not choc switch;
There not RGB or other lighting for save energy;
VIAL sofware key mapping support,full keyboard based on LEOBOG V4 linear MX switch and XDA key cap;