Digital Quaternity Clock

8 pre-set modes + custom mode.
Eg. 15m+5s; 20m+5s; 25m+5s; 30m; 15m+5s (1min/move); 20m+5s (1min/move); 25m+5s (1min/move); 30m (1min/move)
Custom mode: blitz: 5m+2s, ecc.
2 batteries
Also can be used for traditional chess.
Pre order subject to availability.