Purchased three years ago. The left earbud is broken. It offers approximately 3 hours of continuous playback on a single charge, and up to 15 charges are possible using the dedicated charging case. It also includes a USB port for charging smartphones. Maximum continuous playback time is approximately 48 hours with the charging case. Awarded the Red Dot Design Award, given to product designs that have made an impact on the global market. IPX4 splash-proof specification, resistant to sweat and water. Hands-free calling allows you to enjoy calls anytime. Includes a USB port for charging smartphones.