Karaoke microphone with speaker Microphone with speaker that allows you to listen and sing; connect external devices (i.e. mobile phone, tablet, smart TV with ANDROID or IOS operating system) via Bluetooth 4.0 Once paired, sound is played through the microphone speaker. Sound Modulation - While singing, the microphone allows you to adjust volume, background music, bass, treble. The microphone also allows you to use an echo effect, giving you the look of a club DJ playing. It's lightweight, compact and practical, so you can take it with you anywhere - to a party with friends or to an outdoor event. It does not require any application to be installed to connect to the device. Shiny metallic paint always looks great. This is a great gift idea regardless of age. Specification: rose gold Frequency band: - 100 Hz - 10 kHz Battery:- 1200 mAh Li-ion Working hours: 6-8 hours Power supply: USB charger (5V charging voltage) Sound parameter adjustment: bass, soprano, echo Mobile connection - Android/IOS SD card input: Yes AUX input: Yes Bluetooth version - 4.0 Dimensions (length/width/height): 7.5 / 7.5 / 23 cm Weight: 255 g include microphone Rechargeable Battery USB mini cable Full charging time is approximately 2 hours. Button description PREV - Previous song NEXT - next song SCAN - pause/resume song REC - Voice Modulation/Change VOL + - increase volume VOL - - Decrease volume MICVOL - Microphone volume up/down REMIX - Provides an echo effect