Emerson is a Marshall portable speaker, with a compact body that contains tremendous energy and a loud and shocking sound. Emerson is equipped with stereo technology, which is Marcall's multi field stereo system that can capture subtle sound expressions from all directions, providing you with an immersive listening experience. The battery life exceeds 20 hours, allowing you to continuously enjoy Marshall's sound effects. The IPX7 waterproof rating ensures that Emerson can still be used normally after being immersed in 1 meter of water for 30 minutes. Masharll's iconic handwritten logo on the sturdy metal mesh cover of the speaker pays tribute to the brand's greatness Acoustic characteristics: Power amplifier: 1pic10 watt full frequency drive unit; 2 passive radiators Drive type: dynamic coil unit Box principle: passive radiation sealing design Sound pressure level: 87dB SPL@1M Frequency response range: 60Hz --20KHz Stereo/Mono: Stereo Control and Link: Wireless link method: Bluetooth 5.0 Bluetooth link range: 10 meters Top panel control: multiple control buttons; Play/pause, skip tracks, volume control, on/off; Bluetooth pairing button; Battery indicator light Physical properties: External dimensions: 67 * 160 * 76mm Weight: 700g Color: Black Battery Properties: Battery life: over 20 hours Time required to fully charge: 3 hours Fast charging: 20 minutes of charging provides 5 hours of wireless range Packaging list: Emerson speaker User manual containing legal and safety information