K068 Bluetooth Microphone with Speaker Specification Battery is built in. Charge with USB cable Product Type: Full Metal K Song Bluetooth Speaker Microphone Pickup: Capacitive Bluetooth 3.0 Output Power: 10mW (Headphone output) 3W (Speaker output) Frequency Range: 100Hz to 10KHz Maximum SPL: About 115dB 1KHz THD: Up to 1% Reverb Mode: Echo Sound Reeverberation Power Supply: Built-in Lithium Polymer Battery Battery Capacity: 1000 mAh Battery Working Time: 3 to 5 hours Charging Power: DC 5V Connect the phone to support Android, Apple systems. With the app, you can experience the effects KTV karaoke rooms and function K068 Bluetooth Microphone with Speaker Advantages 1. You can also record your song by singing recording software, such as smule, karaoke sing&record, piano teacher, karaoke mode, sing play:karaoke, violeta karaoke,ising etc. 2. It is a smart and portable mini bluetooth speaker with delicate microphone. You can practice your singing at anytime or anywhere only by connect it to mobile phone/computer etc all device with bluetooth function 4. It has the adjustable microphone volume, high quality reverb sound effect and soundtrack switch function. 5. With it, you can sing at anyplace or anywhere to enjoy the happiness from Singing. It can be used as bluetooth loud speaker for any music device. 7. It can be used as a normal microphone within loud speaker. 8. Work with all kinds of device/equipment with buletooth function K068 Bluetooth Microphone with Speaker Package Bluetooth Speaker Microphone x 1pc User Manual x 1pc USB Cable x 1pc