This black Bang & Olufsen Beosound A1 2nd Gen portable speaker is fully waterproof and resistant to dust and sand. This wireless speaker has powerful battery life with up to 18 hours of playback, an integrated voice assistant, three internal microphones and a USB-C to USB-A charging cable. With an adjustable handheld bracelet strap, now you can finally share that podcast you've been working on with the streets of London.