Most systems support Bluetooth streaming plus a range of wired inputs and removable media. Common options include SD/TF card slots, a 3.5mm AUX input, RCA/A‑V outputs, and disc playback formats such as CD+G and DVD.
Battery life varies by model. Many rechargeable portable systems advertise about 5–6 hours of continuous playback, while other units use replaceable AAA batteries instead of a built‑in rechargeable pack.
Systems commonly offer two microphone inputs for duets and may include wired microphones, wireless microphones, or both. Some packages ship with dual wired mics while others include at least one wireless mic for greater freedom of movement.
Many home karaoke machines include a built‑in color display—commonly a 7‑inch LCD or TFT screen—so lyrics appear on an integrated screen during playback.
Several systems let you record performances to an SD card (often in MP3 format) and provide instant playback. Many also support preloaded MP3G song libraries or karaoke discs for immediate playback.
Common lighting features include multicolor LEDs and rhythm‑sync lights that pulse or flash to the music. Some models explicitly market these as “LED Rhythm Sync Lights” or similar multicolor lighting effects.