General Model MX‑ST50B/ZN Channels 2.0 (Stereo) Color Black Total Power Output 240 W AC / 90 W Battery Audio Features Bi‑Directional Sound Yes Sound Modes Party, Standard, EDM, Hip Hop, Rock, Latin, House, Reggae Bass Booster Yes Karaoke Input Yes (Mic In) Connectivity Bluetooth Yes (multi‑connection) USB Music Playback Yes Aux Input (3.5 mm) Yes Battery & Portability Built‑In Rechargeable Battery Yes, up to 18 Hours Water Resistance IPX5 Dimensions & Weight Dimensions (W×H×D) 329 × 665 × 301 mm Weight 11.9 kg