Y2 Colorful Light Mini Karaoke Machine Portable Bluetooth Speaker with 2 Wireless Microphones - Black •The speaker supports Bluetooth/TF card music playback and headphone output functions (TF card not included) •With 2.4G wireless and Bluetooth technology,it provides fast transmission speed and stable connection •The speaker is compatible with Bluetooth-enabled devices •The microphone supporting reverberation sound effect function can make your singing more charming •The colorful light colors can create a romantic party atmosphere •Bluetooth speaker and microphone are equipped with rechargeable batteries,convenient to be charged Specification: •Speaker: •Power: 6W •Working voltage: 3.7V •Frequency range: 2402~2480MHz •Reverb: 20Hz-20kHz •Speaker battery: built-in 18650 battery,1200mAh •Charging time: about 4 hours •Bluetooth name: Y2 •Microphone: •Pickup: condenser microphone •Working voltage: 3.7V •Frequency range: 20Hz-20kHz •Battery: built-in 14500 battery,500mAh (2pcs is 1000mAh) •Charging time: 2 hours Package included: •1 x Portable Speaker •2 x Microphones •1 x Cable •1 x English and Chinese User Instruction •Other things not included