mini 2.1 speaker wireless Frequency: 2.4-2.483GHz Shortest Latency: <0.5ms Frequency ... & aluminium, built-in antenna, shortest latency (<0.5ms), 10 meters wireless transmitter.2. Subwoofer: Material is MDF, horizontal designed, 2.1 ... , 5.25 speaker structure, undertone stronger, output is 30W3. Black with red aluminium line, it is more fashionable.4. Volume part, according ...