Based on multiple product listings and manuals:
Transducer: Condenser (capacitor mic)
Output Power: Built-in speaker ~5 W; headphone output ~10 mW
Battery: Rechargeable Li‐ion; common capacities are 1200 mAh or 1800 mAh, charging via 5 V USB
Wireless: Bluetooth (often 5.0+ or 5.3), with typical range ~10 m
Echo/reverb control: Built‐in reverb/echo effects
Frequency range: ~100 Hz – 10 kHz
LED lighting: Flashing/colored lights - adds fun ambiance
Form factor: Handheld, ~22 × 5–7 cm,8 290–380 g