New Rixing NR-4500M Bluetooth 5.0 Portable Outdoor Karaoke Wireless Bluetooth Speaker with Microphone(Red) Filter-Adapter 2 AAA alkaline batteries provide

2 AAA alkaline batteries provide up to three months of battery life

Working current: 300mA (maximum)

Wireless switch wired

57inch * 14

it can dissipate heat in the air

New Rixing NR-4500M Bluetooth 5.0 Portable Outdoor Karaoke Wireless Bluetooth Speaker with Microphone(Red) Filter-Adapter 2 AAA alkaline batteries provide1. Built in 1500 mAh sufficient amount of 18650 original battery 2. Equipped with wired karaoke microphone 3. 10W high power, with boost 4. Perform Bluetooth playback test at 80% volume, playback time: 2 3 hours, charging time: 3 4 hours (playing time varies with volume and audio content) 5. Support USB, TF card, AUX audio playback, FM radio, cyclic charging, Bluetooth, TWS function 6. Output power: 2*5W 7. Speaker: 2, external magnetic 4 ohm 5W 8.