TOPWOLF Charging Case for AirPods Max with Battery & Sleep Mode - Hard Shell Travel Carrying Case, External Power Bank for AirPods Max

2-in-1 Smart Charging & Protection: Unlike standard cases, this is an External Battery Case that charges your AirPods Max while protecting them. When you zip up, the built-in Sleep Mode function automatically puts your headphones into an ultra-low power state to preserve battery life just like the Apple Smart Case. Extra 40+ Hours of Playtime: Equipped with a powerful built-in 5000mAh battery, this charging case provides a full extra charge for your AirPods Max, allowing you to enjoy up to 40+ hours of continuous listening. Rugged Hard Shell for Travel: Made of durable EVA material with a waterproof splash-proof exterior. The rigid hard shell and soft velvet lining protect your $549 headphones from bumps drops dust and scratches during commutes or flights. Charge While You Carry: Simply place your AirPods Max inside and connect the internal USB-C port. The case acts as a Portable Power Bank allowing you to charge your headphones on the go without needing to find a wall outlet. Perfect fit for Apple AirPods Max. Includes cable storage compartment to keep your cords organized.