Built-in dual-core DSP digital chip, sound card can switch multiple scene modes arbitrarily and supports dual microphones, dual live broadcasts, dual headphones. It also supports one-key elimination of sound, one=key noise reduction, multiple groups of sound change fine-tuning and other functions. Very suitable for live broadcast, mobile K song, music recording, etc. Features: MULTIPLE SOUND EFFECTS AND SCENE MODES: sound card support various scene modes and multiple sound effects, can change your voice like that of child, male, female, etc., and adding more fun to sound. LARGE BATTERY: Built-in 1200mAh large rechargeable battery, powering your entertainment time durably, avoiding frequent charging, eliminate your low battery anxiety. HIGH COMPATIBILITY: Universal USB interface for charging and for connecting to computer, standard 3.5mm plugs for stable audio signal input and output. Compatible with mainstream phone and computer. WIRELESS CONNECTION: Wired and wireless connection are both available. Wired connection for smooth signal transmission and BT wireless connection for convenience. EASY OPERATION: Every single button is with clear markup for indicating particular function. Visual light indicator for showing working status. Adjusting knobs can satisfy fine-tuning. Specifications: Battery Capacity: 1200mAh Power Input: DC 5V 2A Power: 5W Recording: 16bit/48kHz, 90dB signal to noise ratio Replay: 16bit/48kHz, 100dB signal to noise ratio Signal to Noise Ratio: 106dB Item Size: 23.5 * 15.5 * 3cm / 9.3 * 6.1 * 1.2in Item Weight: 620g/ 1.4lbs Package List: 1 * Sound Card 1 * USB Cable 2 * Audio Cable 1 * Users Manual(English) MULTIPLE SOUND EFFECTS AND SCENE MODES: sound card support various scene modes and multiple sound effects, can change your voice like that of child, male, female, etc., and adding more fun to sound. LARGE BATTERY: Built-in 1200mAh large rechargeable battery, powering your entertainment time durably, avoiding frequent charging, eliminate your low battery anxiety. HIGH COMPATIBILITY: Universal USB interface for charging and for connecting to computer, standard 3.5mm plugs for stable audio signal input and output. Compatible with mainstream phone and computer. WIRELESS CONNECTION: Wired and wireless connection are both available. Wired connection for smooth signal transmission and BT wireless connection for convenience. EASY OPERATION: Every single button is with clear markup for indicating particular function. Visual light indicator for showing working status. Adjusting knobs can satisfy fine-tuning.