Model: GI6T-4R Overall Size : 28.6''L x 6.3''H x 1.7''W (72.5cm L x 16cm H x 4.3cm W) Weight:3 kg Frame Materials: Black Aluminum Alloy Frame Digits Height & Color: 4inch (10.16 cm), in Red Color Light Source: LED (High Brightness) Power supply: 12V DC (110-260VAC power supply) Working Temperature: -20℃-60℃ Working Humidity： 5-95%RH Storage Temperature： -50℃-80℃ Can Be Customized: Yes 12/24 H Clock, Countdown/up Stopwatch Interval Timer Read more Two kinds of Control Option OPTION1: IR Remote Control:Valid distance is 5-10 meters with direction. OPTION2: APP Control:with iphone ISO & Android system App control user terminals, just down-load App by mobile phone, control easily. Valid distance is 15 meters without direction;Mobile phone needs to install app software. Remote control is standard, APP control needs to be customized. IF you want to APP control, please tell us before make a order. Read more What's in the box? LED clock: 1 PC Adapter: 1 PC IR remote controller: 1 PC Wall bracket & screws: 1 SET Instruction manual: 1 PC Important Cautions : The controller does NOT have CR2025 3V battery, because battery is NOT accepted by Air courier, Thanks for your kind understanding. Read more Read more