【Compact and Portable】 Lightweight, portable and easy to carry, can be used for outdoor activities. Only 1.7 ounces of weight, you can barely feel it while running. 【Back Clip Design】 Back clip design, can be firmly attached to your fabric or other devices, also suitable for sports. Perfect for your entertainment and learning, outdoor activities and fitness activities. 【Expansion Slot】Built-in memory card expansion slot, supports maximum 8GB expansion (not included in the list). 【Long service life】 Long battery life, can play more than 5 hours, more convenient to use. Adopt high-quality aluminum alloy material, which is more durable and has a longer service life. 【SATISFACTION SERVICE】Buy without risk as we always stand behind our products. If you have any concerns about after-sales service, please feel free to contact us. We will do everything we can to help you.