The iHome iBT21 Bluetooth Bedside Dual Alarm Clock is an alarm clock that supports Bluetooth wireless streaming from Bluetooth-capable mobile devices or play your music via the 3.5 mm stereo connection. Additionally, a 1-amp USB port keeps your mobile devices charged and ready to go. The iBT21 features dual alarms with dedicated alarm time display. Bluetooth Wireless Audio Send digital audio wirelessly to the iBT21 from your iPad, iPhone, and iPod touch, Android, Blackberry or other Bluetooth-enabled audio device Wake or Sleep to Bluetooth Audio Wake or sleep to Bluetooth audio so you can start and end the day with your favorite sounds Dual Alarm Choose two separate wake times and alarm sources Gradual Wake and Gradual Sleep Gently increased/decreased alarm/sleep volume eases waking and gradual sleep Adjustable Sleep Timer Adjustable sleep timer with separate volume Aux-in Jack Play virtually any audio source through the iBT21 USB Charging Port Charge your iOS devices and other portable devices - enjoy your music while keeping your device fully charged Universal Switching Voltage Adapter 100-240V universal voltage AC adapter works just about anywhere Battery Backup SureAlarm battery backup ensures your alarm still goes off if there is a power interruption