?More Professional Chess Clock?Chess Clock Has 8 Major Categories Of Functions Such As Single/Multi-Segment Countdown, Bonus, Time Limit, Time Delay, Reading And Setting Memory. It Also Has 42 Timing Rules, Each Timing Rule Can Be Modified Timing Parameters, Is A Professional-Level Chess Clock. | ?Easy Setup And Control?- Still Wasting Time With Tedious Function Setup? Don’T Worry, Xflyee Chess Clock Has More Intuitive And Easy-To-Use Controls That Allow You To Control The Game With Just Three Buttons. | ?Eco-Friendly & Portable? – The Chess Clock Timer’S Shell Is Made Of High-Quality, Environmentally Friendly Abs Material, Ensuring Excellent Durability. Compact Size, You Can Take It Anywhere To Use And Enjoy The Game Anytime And Anywhere. | ?Not Just A Chess Timer? – Chess Is Not The Only Game That Requires A Timer. Our Versatile Setup Can Support Hundreds Of 2-Player Games From Around The World, Creating Game Variety. | ?You Will Get? 1* High-Quality Digital Chess Clock Conforming, 2* Aa Batteries, 1* Nice Packing Box, 1* Product Manual. If You Have Any Questions About The Product, Please Feel Free To Let Us Know. We’Ll Get Back To You Within 24 Hours.