Domestic Inventory is Limited. Please check with us on available stock before ordering. Features: Standard 3.5mm Audio Input which support MP3, Mobile Phones, iPod, iPhone, etc. Works as far as 10 meters from the Bluetooth device Support Talking / Listening even if the Device is Located in Another Room With High Quality Steel Casing Can Last Up to 4 Hours of Continuous Playback Big Capacity Battery with 450 mAh Shows Speaker's battery level on iPhones Bluetooth Support for Hands Free Cell Phone Calls Has Wonderful Built in Subwoofer speaker High Capacity Lithium Battery Also Works with Headset Price Includes: Free Setups Free virtual proof Free UV imprint on 1 side, NO logo PMS matching Free Standard shipping to 1 US location Free micro USB charging cable for charging the power bank Free standard gift box (white box) TECHNICAL INFO: Charging Voltage: 5V Operating Voltage: 3.7V Output Power: 3 -5W Frequency Response: 60Hz- 18KHz Battery Capacity: 450 mAh