Clock Function: 12 hours or 24 hours Clock ( can select 12 hours or 24 hours). Alarm Clock Function: Can set 5 alarm clocks. ( For example: you can set 02:00, 05:00, 12:00, 18:00 20:00, 5 different alarm clock to remind you.) Backside Stand: Make this timer can stand on the desk.Backside Hanger: you can hang it on the place you want. Timer Function: Countdown Timer Max count 23 hours 59 minutes.Use 1 pcs AAA Battery ( For shipping safety reason, battery not included.) Responsive buttons, easy to use. Comfortable and flexible buttons, shock-resistant and drop-proof. Eco-friendly ABS casing, made from ABS engineering-grade hard plastic, which is safer and more environmentally friendly, as well as impact-resistant and corrosion-resistant. Stylish appearance and ergonomic design, with dimensions that fit the hand perfectly for a more comfortable grip.