Playtime: Up to 25 hours of total on-the-go playtime with the wireless charging case. Wear Detect Sensor: Clever ear-detect sensors auto-pauses music when earbud is removed. Touch and Voice Control: Navigate tracks and calls using both voice and touch controls. Splash Resistant: Water splash-resistant design (IPX4) protects against sweat and rain. Crisp Call Quality: Dual microphones on each earbud ensure crisp calls even in noisy environments connectivity technology: Bluetooth. Superior sound and no wires, the Urbanears Luma Wireless Bluetooth Earphones are ready to accompany you on your way to work or in a gym. Sweat and splash resistant design means a bit of rain won't hurt them and you can enjoy your music all day long. Fantastic 25 hours of battery life from the charging case means you have always enough juice to recharge the earbuds right from your pocket.