1、Full Size Display: The digital wireless alarm clock has a full size high definition display with bright LED backlight 2、3 Levels Brightness: The FM alarm clock speakers can be used as BT speakers and digital alarm clocks, with three levels of brightness adjustment 3、Mobile Phone Charging: The digital radio clock has the function of wireless mobile phone charging, and also has the sound effect of stereo bass 4、HD Microphone: The LED digital alarm clock has a built in 2000mAh high capacity lithium battery. Built in high definition microphone to answer phone calls 5、FM Radio: The wireless alarm clock has built in FM radio, can play BT 2, memory card play, AUX input 1 x Digital Wireless Alarm Clock2 x Cables1 x User Manual Item Type: Digital Wireless Alarm ClockMaterial: ABSBattery Type: Lithium Battery (shipped with built in battery)Battery Model: 18650Battery Capacity: 2000mAhWorking Time: About 6 Hours (medium volume)Speaker Size: Φ45mm/ 1.8inOutput Power: 5WConnection Method: BT ConnectionEffective Distance: 10meters/ 10.9ydCharging Time: 2 to 3 HoursFrequency Response Range: 280HZ to 16KHzSupported Formats: Memory CardFunction: FM Radio, Mobile Phone Wireless Charging, Aux Voice Frequency, Memory Card, BT Connection