Triangle Plum alarm clock for bedrooms Display at a glance: The LCD shows date, day of week, indoor temperature and humidity, giving you essential daily information in one view. Placement options: Two installation methods available place on a desk or wall mount using the built in back hanging hole to save space and fit different room layouts. Power and memory: USB powered or uses 3 AAA batteries (not included); retains memory after power loss for reliable operation. Size and material: Measures 20 x 20 x 8 cm with a white and black finish; made from ABS material for durability and resistance to wear in home environments. Use scenarios: On a bedside table in the bedroom to monitor date and room conditions while you sleep. On a home office desk to keep track of date and climate during work. Mounted in the kitchen or entryway to have quick access to date and indoor conditions when leaving or entering the home.