Up to 21 Hours of Playtime (7 Hours Max in Buds / 14 Hours Max in Case) Long battery life lets you play that much longer or push yourself that much harder without having to stop and take time out for recharging. Active Noise Cancelling with Smart Ambient Block out what you don't want or hear more of what you do. Smart Ambient technology lets you run safely on the street or catch up with friends while crushing your workout. Ear Fin for Secure Fit Choose from three different ear fin stabilizers to find a perfect, stable, comfortable fit. Designed for movement, defined by you Whether you're into yoga, running or barre, JBL Reflect Mini NC true wireless sport earbuds are the perfect accessory for your athleisure lifestyle. Active Noise Cancelling lets you focus on your fitness goal with zero distractions, while Smart Ambient technology keeps you aware of your surroundings or lets you chat with a friend. Each in-ear connects immediately and independently, so you can take calls with either one and assign unique functions to left and right. With 21 hours of playtime, different reflective color choices and an IPX7 waterproof rating, they're the ultimate true wireless in-ear sport headphones.