Soundcore by Anker Select 2 Portable Bluetooth Speaker – Black A3125H11 Soundcore Select 2 is the perfect crystal-clear portable Bluetooth speaker. Using our exclusive partycast technology, you can link over 100 partycast speakers together for synchronized music and lights. A 20 hour playtime paired with IPX7 waterproof technology makes it the perfect outdoor speaker, and you can customize the sound and lights using the app to get the perfect vibe. Detachable strap is included so you don’t drop it during the more rugged adventures.