AudioSnax – X-1 Bluetooth Streaming Music Modern Sound Design Portable, Long Lasting Music Tech Specs: Output: 2.5W Signal to Noise Ratio: >86dB Frequency Response: 100Hz – 20kHz Distortion: <10% THD Battery: Li-ion, 3.7V Battery Capacity: 500mAh Battery Charging Voltage: 5V Charging Time: 3 Hours Max Battery Life: 4 Hours (Using Bluetooth) Battery Life: 5 Hours (Using an Audio Cable) Driver Unit: 36mm, 4 Ohm, 2.5W Dimensions: 70mm x 53mm (2.75 inch x 2.08 inch) Power Indicator Light: Blue Transmission Distance: 10m (32ft) Working Frequency: 2.40GHz – 2.480GHz Bluetooth Model: V2.1 + EDR Transmission Power: Bluetooth Class 2 Product Weight: 100g (3.53OZ) Accessories Included: User Manual and USB Charging Cable For Apple iPhone 4S and users with the latest 5.1.1 iOS update, please reset Network Settings if you are having trouble connecting. Compatible with: Apple iPhone 4 , 4s , iPad , iPod touch Samsung Galaxy Note 10.1 HTC Motorola BlackBerry Windows Smartphones Anything that can connect via BLUETOOTH or an Audio Cable