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