Features: This mini voice changer comes with 4 sound effects and 4 voice changes, so that you can enjoy sound changing as you please. Mini size and light weight, convenient to carry and store. Plug and play, simple to operate. Comes with a audio cable with 3.5mm interface; if there are some devices with different interfaces, you can use a conversion line to help connect (NOT included). With a built-in 3.7V 300mAh lithium battery, it can be recharged through the equipped micro USB cable. Compatible with most smartphones, PCs, tablets, game consoles and so on. Applicable to online karaoke, online chatting, live streaming, etc. Specifications: Material: Plastic Color: Black Power Supply: 1 * 3.7V 300mAh lithium battery Battery Energy: 3.7wh Battery Life: about 3~4 hours (at full charge) Charging Input: DC 5V / 1A Signal to Noise Ratio: 106dB Dynamic Range: 106dB Sound Effects: Sound+Special Sound+Germination+Deep Voice Change: Male to Female+Female to Male+Loli+Baby Voice Item Size: Approx. 7.5*5*1.1cm / 2.95*1.97*0.43in Item Weight: Approx. 103g / 3.63oz Package Size: Approx. 11.5*9*3cm / 4.53*3.54*1.18in Package Weight: Approx. 110g / 3.88oz Packing List: 1 * Mini Sound Changer 1 * Audio Cable 1 * USB Charging Cable 1 * User Manual (English)