Daily Steals offers the Sharkk Flex 2o Bluetooth 4.1 Headset in Black, model no. MS-SK2541, for $24.99 with free shipping. That's $25 under our June mention and the lowest total price we could find by $19. It features an IP67 waterproof rating (up to 30 minutes under three feet of water), echo cancellation, and up to eight hours of music playback.