Bose Sport Earbuds are true wireless Bluetooth earbuds engineered for your best workout yet. With acclaimed lifelike sound and a comfortably secure fit, get ready to beat your personal best, again and again. Features: - Bose lifelike sound: makes your music sound like the performer is right there beside you, pushing you to go one more mile or do one more rep. - Secure and comfortable earbuds: customize your fit with the included 3 sizes of StayHear Max tips that won’t hurt your ears and won’t fall out no matter tough your workout is. - Sweat and weather resistant earbuds: IPX4 rated, with electronics protected against splashing water. - Clear phone calls: a beamforming microphone array separates your voice from surrounding noise so your callers can hear you better. - Simple touch controls: instead of buttons, the capacitive touch interface lets you tap to play or pause music, answer calls, and more. - Long battery life: up to 5 hours per charge with the included charging case, and up to two hours on the go with a 15-minute quick charge. - Reliable Bluetooth connectivity: a custom-designed antenna hidden outside each earbud keeps you connected. - Bose Music app: name your earbuds, set the controls, check battery life, get software updates, and more. What's in the box: 2 Bose Sport Earbuds (fitted with medium eartips), Charging case, Small and Large eartips, USB-C (A to C) charging cable, Quick-start guide, Safety sheet Dimensions/weight: - Earbuds:1.87 cm H x 2.66 cm W x 2.1 cm D (6.75 g each) - Charging case:3 cm H x 9.14 cm W x 4.14 cm D - USB cable:30.5 cm Battery: - Battery life: Up to 5 hours - Earbud battery charge time: 2 hours - Charging case battery charge time: 3 hours - Quick-charge time: 15 minutes for 2 hours - Battery charge method: USB-C - Battery type (earbud): Lithium-ion (metal-enclosed coin cell) - Battery type (case): Lithium-ion (pouch cell) - Automatic on/off feature to preserve battery life Bluetooth: - Bluetooth range: Up to 9 m (30 ft) - Bluetooth version: 5.1 - Codec: SBC and AAC