Item Type: Interval Timer Application: Home, fitness, sports, meeting timing. Display Screen Size: 1.5 inches Shell Material: New Aluminum Alloy Product Panel: High-Gloss Glass Material Display Material: High Definition LED Clock Accuracy: Error 3 Seconds Power Supply Mode: External Input Voltage: 5V 2A Applicable Circumstances: Suitable for all kinds of indoor places Product Size: Approx. 27 x 8.8 x 2.7cm / 10.6 x 3.5 x 1.1in Remote Control Battery: 2 x AAA Battery (self-provided) Package List 1 x Timer 1 x Power Cord 1 x Remote 1 x User Manual 2 x Hook 4 x Screw 1H1/H2 respectively represent 24/12 hour display, and you can use remote control to switch different display modes. 2Supports up to 10 groups of alternate timing and quick storage; two fitness alternate timing-TABATA and FGB modes are set in the clock. 3Support up to 99 minutes, 59 seconds and 99 milliseconds count up and count down, and the time setting is very simple. 4Equipped with a hook, this LED timer can be fixed on the wall with screws, and the installation is very simple. 5Allows for flexible application in various places, including but not limited to home, office, class, gym, etc.