Top features: Designed for sports so that you can perform to your maximum Sweat and water resistant for top quality sound even when you are most active Recharge on the go to get up to 13. 5 hours battery life Secure, cordfree fit that gives you complete freedom of movement Compatible with all smartphones so you can switch between devices Designed for sportsFeaturing an inear heart rate monitor and integrated app to test and analyse your fitness, the premium Elite Sport 2 Wireless Bluetooth Earphones offer inear audio coaching to keep you motivated and pushing your performance limit. Improving on the original Elite Sport, the advanced personalised fitness analysis advises on recovery and predicts your race pace. With real time guidance, you can reach your peak for every workout. Sweat and water resistant Workout with complete confidence that sweating will not compromise your sound. The Jabra Elite Sport 2 Earphones are designed to handle highenergy workout sessions and come with a threeyear warranty (registration required) against failure from sweat. Recharge on the goAlong with the 4. 5 hours of battery on your charged device, the Elite Sport 2 come with an onthego charging case offering two additional charges of 4. 5 hours, meaning you never lose power. Secure cordfree fitThe Jabra Bluetooth Earphones are cordfree, comfortable and secure, giving you complete freedom of movement in all your activities. You can choose to wear one or both of the earbuds, while doubletapping the right one lets you hear external sounds without having to remove the earbud. Compatible with all smartphones These earphones are compatible with all smartphones so that you can enjoy quality wireless sound and calls on all your devices.