Multi-function Portable Cosmetic Mirror LED Clocks Dual-Use Mirror Alarm Clock Working voltage:2.2-5V Working temperature : 0℃~50℃ Power: 내장 1* CR2032 배터리(포함) 배터리 수명 시간:6-7 months Temperature measurement arrange: -10℃~ 50℃（14℉~122℉） Time error: ±30 seconds/month Alarm sound: BiBiBi Alarm volume: 60-75DB Product size: 75*93*12.6mm Product net weight:70.2g Portable Travel Alarm Clock with Makeup Mirror Multiple Features – Not only does it tell the date, 요일 , time, and temperature, but also it has alarm clock feature Large Display: With bigger 2.8″ x 1.5″ LCD screen and clear bold digits, it is easy to read . Portable & Elegant : A minimized size of 3.56″ x 3.35″ x 0.5″, CR2032 button cell powered, compact and lightweight for easily pack or toss into your purse. Easy Operation : The intuitive setting button in front of the clock , easy to set the time or alarm for kids, 노인과 노인. With Save Power Mode : Press and hold snooze button to switch off the display to enter save power mode . The battery can be used for 12 months With Backlight :The Travel clock has 5 second on-demand light which can be used to see the time at night. Folding Cover with Mirror： it is not only for safe storage during journey, the mirror is also an essential for everyday use.