Plantronics BackBeat FIT 3100 True Wireless Earbuds, Sweatproof and Waterproof Product Features:Stay aware: Whether you’re logging miles on rugged trails or city streets, keep your workouts safer with Always Aware™ eartips. The unique ear tip design doesn’t fully block the ear canal, letting in ambient sound and allowing you to simultaneously listen to music and hear your surroundings. Experience natural mid-tones, crisp highs, and a comfortable fit that never feels too snug, all while remaining aware of the world around you, for safer training in any environment.Weatherproof workouts: Sweatproof and waterproof BackBeat FIT 3100 is built to take on your most intense workouts, so you can keep listening – no matter what weather.Stability and comfort: Experience true wireless freedom without fidgeting with the fit. With soft, flexible, secure-fit earloops and comfortable stabilizers, BackBeat FIT 3100 earbuds will stay put during your toughest reps.wireless listening and enjoy up to 10 additional hours with the included charge case.Download the BackBeat app to customize your experience: Now you don’t have to pause your workout to change things up. Available through the BackBeat app, the My Tap feature offers command customization for a personalized workout experience. With one or two taps and no break in the action, you can start a stopwatch, set a timer or select your favorite playlist directly from your earbuds.Please note: Item Ships without the retail packaging to save on shipping. Additional Information:Discover how the BackBeat app brings a new level of customization and control to your BackBeat headphones.MY TAP COMMAND CUSTOMIZATION: Assign commands to your sport earbuds. With one or two taps, you can start a stopwatch, set a timer or select your favorite playlist directly from your earbuds.DUAL-MODE ACTIVE NOISE CANCELING: Choose how much noise your BackBeat GO headphones tune out for clear audio in high- and low-noise environments.TWO EQ PRESETS: Customize how your BackBeat GO headphones sound with two EQ presets.STAY UPDATED: Update the firmware on your BackBeat headphones to get the latest features. You will be automatically notified when new firmware is released.SYSTEM REQUIREMENTS: Android 4.4 and up - iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.What comes in the box:1 Plantronics BackBeat FIT 3100 headset (R/L) 1 Charging case1 Pair of comfort eargels (R/L) 1 Micro USB charging cableUser Instructions Sheet