Ⅰ. Enhanced HD Microphone Core: Equipped with a speaker to deliver clearer sound, reduce feedback, and make live streaming or singing easier. Ⅱ. Speaker: 57mm full-range large-diameter speaker with acoustic structure delivers sound experience, reproduces sound with precision, and provides a surround sound experience. Ⅲ. 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. Ⅳ. Mobile Karaoke: Supports mobile karaoke, so you can sing wherever you go. Just connect to your phone via BT and start singing anytime, anywhere. Ⅴ. 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. Ⅵ. Color: sky blue, pink, white (optional) Ⅶ. Number of microphones: 1pc, 2pcs (optional) Ⅷ. 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) Ⅸ. 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: DC5V≤ (can be used with mobile phone charger); Battery specification: 2000mAH; Charging time: about 2.5 hours Ⅹ. Microphone size: 135*40mm; Speaker size: 85*75*65mm; Package size: 10*8*7cm; Package weight: 550g Ⅺ. Package list: V11838BL-1, V11838P-1, V11838W-1: 1 * 1 microphone * speaker; V11838BL-2, V11838P-2, V11838W-2: 2 * 1 microphone * speaker Ⅻ. Package list: V11838BL-1, 38P, V11838W-1: 1 * 1 microphone * speaker; V11838BL-2, V11838P-2, V11838W-2: 2 * 1 microphone * speaker