JS-240A Chess clock 

JS-240A1.Total 28 timing rules, Suitable for the different Competition     System, including all universal timing standards2. Playing time, Moves and game round are settable, and     can be modified during pause and end.3. Automatically memorize the parameters setting4.  Manual setting rules additional5. View timing parameters for the current rule6. Sound alerts on/off function.7. Light reminder8.Timing key tone on/off function9.Low battery indication10. Concealed ON/OFF button , rocker button for timing11. Upscale gift box packingsize:169×96.7×63.5 mm