Features: Feature 3 alarms mode including single ringtone, single vibration, or ringtone + vibration. Vibration: three-level vibration option. Builts-in 1800mAh Rechargeable Battery: Features a battery bar display, so you can recharging the clock when battery is low, preventing you from missing the alarm. Travel Essential, Portable design fit easily into luggage or backpacks. Comes with a hanging lanyard that making it easy to position wherever you need it. Multifunction: vibration, sounds, time display (12/24 hour format), DST, double alarm setting. With alarm days option: (1-5, 1-6, 1-7, 6-7), snoozes function, day of the week display, battery level display, child lock Function. Specifications: Component: Plastic Color: White Size:Approx. 9.8x8.3x2.6cm/3.86x3.27x1.02in Battery Capacity: 1800mAh Package Includes: 1 set Alarm Clock note: Please allow 1-3cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item.