Power and connectivity The back panel includes a dry battery installation port and a power supply port. You can power the timer by connecting a charger or power bank via USB. To operate, you must connect the mains adaptor; the unit does not store power. Multifunction timing Countdown Plus seconds Multi-segment timing Time limit Positive timing Delay function Mute Wide compatibility Suitable for multi-move games such as Chinese chess, international chess, Go, and related formats. Easy to use During a match, the parameters for both players can be adjusted. The left and right sides can each use different base times and auxiliary parameters. Use scenarios - Club or tournament play for chess, Chinese chess, or Go with standard base times and increments - Training or practice sessions requiring delay or mute to control pace - Coaching or simultaneous play where settings are adjusted on the fly for each player