2 IN 1 THERMOMETER AND HYGROMETER: Charged by both power supply and batteries(included), this indoor thermo-hygrometer can work for a long time. Never worry about running out of power like projection clocks. WEATHER FORECAST: The indoor weather monitoring clock can automatically detect and display the current ambient humidity and temperature as well as the 12-hour temperature trend, allowing you to be aware if adjustments are necessary, such as thermostat or humidifier. MAX MIN RECORDS: The room humidity gauge displays with high low(press MAX/MIN to switch) temperature and humidity. ALARM WITH SNOOZE FUNCTION: The temperature and humidity meter with snooze function works as an alarm clock. Snooze time: 8 minutes. Ideal alarm clock for home, keeps you and your familys living conditions optimal. VOICE-ACTIVATED BLACKLIGHT: No touch needed The home digital thermometer with backlit can be waken up once the sound greater than 90 decibels. You can easily read clear digits in dim light conditions, a perfect gadget for bedroom, baby room, office, etc. Features of Indoor Digital Weather Measuring Clock: - Colorful and eye-pleasing screen - Temperature and humidity monitoring - Display live time, calendar (date, day of week) - 12-hours weather trend - Alarm clock with snooze function - Backlight, voice activated, - C or F switchable; 2/24 hour switchable Specifications: Brand: Lelesta Product Category: Multi-functional Digital Thermo and Hygro Meter Color: Black Material: ABS material + rubber oil Humidity range: 20%~99% RH Temperature Range: 0C~50C (32F~122F) Snooze time: 8 minutes Size: 14.5 x 9.0 x 2.3 cm (without base) Net weight: 166g Power Supply: 1. 2 x 1.5V AAA Batteries(NOT included, for waking up screen and lasting for 8 seconds) 2. USB cable (the screen is always on) Package Included: 1 x Temperature Humidity Clock 1 x USB Cable 1 x User Manual Notes: 1. When using the data cable, the backlight of the screen is always on; when the battery is used, the backlight is on for about 8 seconds. 2. The weather forecast measured based on the indoor temperature and humidity has a minor discrepancy and is for reference only. 3. The humidity meter has no memory function and needs to be reset (time, alarm) once power supply is cut off by accident. Our Service: 2-year Warranty. If you have any concern or issue for our room hygrometer. Please tell us in your order detail page for free replacement or a refund.