Powered by a high-capacity 1200mAhrechargeable battery The clear LCD display makes it easy to see the time Built-in 2 AG13 batteries memory function, no need to reset after power failure 24 hours/12 hours conversion and with 3 ringtones: high-middle-low 5 colorful LED ambient light, you can choose your favorite light mode to use for home lighting/sleeping/reading/adjusting the ambiance standard Sunset mode and wake-up light mode USB port design, support multiple devices charging 4-speed backlight adjustment. Display brightness can be adjusted manually. Clock brightness and darkness (three grades), 10:00 pm - 6:00 am defaulted one grade brightness, the light will be automatically adjusted, after 6:00 pm back to normal brightness 2 groups of alarm clock independent switch, three groups of working day mode alarm clock, 25 music ringtone selections. The alarm clock can be set to different music Specifications: Product model: LD908 Version: English Material: ABS Built-in battery: 1200mAh lithium battery Size: 145 * 86 * 130mm Package included: 1 x Alarm Clock 1 x Charging Cable 1 x English User Manual Other items not include