... Micro SD Card Quick Details Brand Name:OEMModel Number:YFYMemory Size:1GB-8GBScreen:NoBattery Life:< 10 hoursStyle:HeadphoneFunction:Voice Recorder, ... MP3 Format.Cycle mode as the initial playing setting, Memory Function for song and radio.Automatic FM radio sourcing and ... control design, Hi-Fi, CD sound effects, strong bass.Size adjustable, suitable for most people, foldable designed for easy carrying ...