Key Features For iPhone, iPad, Android and digital cameras Built-in XLR connector for microphones Adjustable gain control +48 V phantom power 50 Hz to 20 kHz frequency response Headphone output with direct monitoring Attached 40cm (15.75") TRRS cable Auto-sensing 3.5mm output Powered by 2xAA batteries On/Off switch Compatible with all your favorite apps Technical Specifications Frequency response: from 50 Hz to 20 KHz EIN (@gain min): -113.5 dBA EIN (@ gain max): -92.4dBA THD+N: -90 dBA / 0,003% Gain range: 48dB Phantom max current: 6mA Battery duration (Alkaline 2xAA): approx 20 hours when phantom is off, approx 7 hours when phantom is on Includes iRig Pre 2 2xAA batteries Velcro strip Free apps for iOS and Android Dimensions Size: 40mm/1.57" x 110mm/4.33" x 34mm/1.34" Weight: 75g/2.65oz (batteries excluded) Cables length: 40cm/15.75" iOS and Android Devices Compatible with iPhone, iPad, iPod touch and Android devices with 1/8" / 3.5mm jack standard headset input (onboard or via adaptor) compliant with the CTIA/AHJ wiring standard, which is illustrated as follows. DSLR Cameras Compatible with most DSLR cameras equipped with 1/8" / 3.5mm jack microphone input.