The BoomBest LN‑1036BT is a portable Bluetooth 5.0 speaker (≥ 10 m range) that also supports TF card, USB, AUX and FM radio. It uses two drivers — a 4" 20 W and a 52 mm 10 W — for a combined output of about 30 W, covering a frequency range of 20 Hz–20 kHz. It delivers clear sound with ~90 dB signal‑to‑noise ratio and ~1 % distortion. The speaker is built with ABS housing and a metal grille, measuring ~16.8 × 12.8 × 20 cm and weighing around 1.4–1.6 kg. It runs on dual 2000 mAh batteries (≈ 4000 mAh total), offering roughly 3–5 hours playback per charge, and charges via DC 5 V (Type‑C).