Up to 266 hours of 2.4 GHz wireless uptime without backlighting. As compact as the 60% keyboard, while maintaining functionality and arrow keysHERMES M4 Hybrid is designed as a 65% keyboard to maximize space usage. The hybrid keyboard also puts emphasis on premium aesthetics, featuring black and white dual colorway keycaps with a smooth and contoured gunmetal grey aluminum frame finish. To bring more customization to the table, an extra set of 16 auxiliary keycaps is included in the box. Build the dual colorway keyboard and reassemble its appearance with the extra set of keycaps.