Ⅰ. Features: Enhanced HD Microphone Core: Equipped with a speaker to deliver clearer sound, reduce feedback, and make live streaming or singing easier. Powerful Speaker: 57mm full-range large-diameter speaker with acoustic structure delivers sound experience, reproduces sound with precision, and provides a surround sound experience. Microphone and BT Speaker: This device works as both a microphone and a BT speaker. With simple one-button start, you can connect and start singing or just play music. Mobile Karaoke: Supports mobile karaoke, so you can sing wherever you go. Just connect to your phone via BT and start singing anytime, anywhere. Portable and Convenient: Compact and small design makes it easy to carry in your car, suitcase, or bag. Whether you are at home or traveling, you can sing whenever you want. Ⅱ. Specifications: Color: sky blue, pink, white (optional). Number of microphones: 1pc, 2pcs (optional). Microphone: Pickup: rear pole condenser microphone. Working voltage: 3.7V. Frequency range: 20HZ~20KHZ. Battery specification: 1200mAh. Power adapter: DC5V≤1000MA (can be used with mobile phone charger). Speaker: BT version: 5.0 version. Speaker diameter: 57mm. Speaker power: 6W. Working voltage: 3.7V. Frequency range: 20HZ~20KHZ. Reverb: echo sound effect reverb. Power adapter: 1DC5V≤ (can be used with mobile phone charger). Battery specification: 2000mAH. Charging time: about 2.5 hours. Microphone size: 135*40mm. Speaker size: 85*75*65mm. Package size: 10*8*7cm. Package weight: 550g. Package list: V11838BL-1, V11838P-1, V11838W-1 1 * 1 microphone * speaker. V11838BL-2, V11838P-2, V11838W-2 2 * 1 microphone * speaker. Package list: Package list: V11838BL-1, 38P V11838W-1 1 * 1 microphone * speaker. V11838BL-2, V11838P-2, V11838W-2 2 * 1 microphone * speaker.