Bluetooth (often “JieLi” chipset)
USB and SD / TF card slots
AUX / 3.5 mm input
FM radio tuner
Built‑in rechargeable battery (often 12 V, ~7 Ah)
Dual or single microphone inputs, often with at least one wireless mic
LED display / controls / remote
Trolley / portable form factor (wheels + handle)
Moderate RMS output (for example the LTS‑10B is ~50 W RMS)
Playtime of several hours (6–8 hrs or so) depending on volume