Note : If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earbud tips to ones that fit more snugly in your ear SIGNATURE SOUND: Engineered to deliver a thunderous audio experience. While being effortlessly portable in its compact charging case, Mode II also produces phenomenal sound with no wires attached. Custom-tuned dynamic drivers create a rich audio experience with growling bass, natural-sounding mids and crisp treble. 25 HOURS OF WIRELESS PLAYTIME: Delivering 5 hours of wireless playtime on a single charge with a charging case that you can carry in your pocket. On a full battery, your charging case will charge Mode II up to four times, which gives a total of 25 hours of playback on the go. ERGONOMIC AND DURABLE CONSTRUCTION: Delivers a comfortable, ergonomic all-day listening experience encapsulated in iconic Marshall design. Use one of the four included ear-tip sizes to create a customised and secure fit. The IPX4 water-resistance rating ensures increased durability in the event that your headphones come into contact with moisture. CONTROL YOUR MUIC WITH NO WIRES ATTACHED: Offers a truly wireless experience with Bluetooth 5.1 technology. Easily control your music, phone calls and more with just a touch of your finger. The touch-responsive earbuds deliver an intuitive, easy-to-use experience. Touch the left earbud to access Transparency mode, EQ settings and native voice assistant. Touch the right earbud to control playback settings, and touch either earbud to receive and end phone calls.