Powered by Sennheiser True Response transducer, a 7mm dynamic audio driver that delivers a high-end sound experience with full bass. Fine-tune the sound experience to your taste with presets and an intuitive equalizer through the Smart Control App. Customize the ergonomic fit of your sport true wireless earbuds with a choice of ear adapters in three sizes and four different ear fins, so they stay comfortably in place during any performance.Discover sports-optimized control of how you experience sound and hear your environment. Tailor your sound experience for the level of immersion or awareness you prefer. Our unique Adaptable Acoustic feature offers the choice of either Open or Closed ear adapters, that match with special EQ modes to provide the perfect setting for your exercise. Choose an Open ear adapter style to stay aware of your surroundings but at the same time minimize body-borne noise, like hearing your own breathing or footsteps. Or simply switch to an insulating Closed-ear adapter that blocks outside sound for an immersive audio experience. Splash, dust and sweat resistance.There’s no need to slow down when conditions get tough: the sleek durable design has an IP54 rating so it can easily handle sweat, rain or workouts on the beach. Peak endurance. Delivering 9 hours of playback time and a further 18 hours with on-the-go charging via the case, for a total of 27 hours.Weight charging case: 41.6gWeight each Earbud: 6.8g Non-Returnable for reasons of health & hygiene. Your statutory rights are not affected. - More Info 4.49 5 G6 Delivery will be by our carrier, Royal Mail. A signature will be required, so if no-one is available they will leave a card to arrange a more suitable delivery time. They will not contact you prior to delivery. D False Health & Hygiene Non-Returnable for reasons of health & hygiene. Your statutory rights are not affected. Sound 5.99 5.99 Sennheiser Sport True Wireless Earbuds - Black | Kaleidoscope