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Small, lightweight and easy to carry. Solar charging, built-in monocrystalline silicon solar, charge conversion rate of 78%, 6 hours fully charged. Intelligent memory point display, easy to hear, three display groups (playback, charging, reading disk), practical, affordable and durable. File selection (previous song, next song) (previous chapter, next chapter) (fast forward, rewind) (pause, play). Supports 8 folders. Built-in recyclable polymer lithium battery 350 mAh, long standby time for more than 15 hours. › See more product details