Lightweight and waterproof bone conduction headphones, perfect for fitness and running. - Model Name: Bone Conduction Headphones - Intended Use: Running, Walking, Fitness - Features: Easy operation, Bluetooth connection, long-lasting battery, lightweight, waterproof Please check the images before purchasing. This is an outlet item, so please refrain from purchasing if you are looking for a perfect new item. There may be scratches, stains, and shape distortion from storage, and color differences from the actual product. Since this is a visual inspection by an amateur, there is a possibility of oversight. [Shipping Method] Mercari Delivery / Undecided (Sagawa Express) *May be changed depending on circumstances Shipping will be in simple packaging (including folding and compression) to reduce shipping costs. In case of damage during transportation, please contact the shipping company. Return shipping costs will be borne by the buyer. Scheduled to be shipped via post.