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Be prepared for a long flight with the GoGear Spark by Philips ($50/2GB – $59/4GB). This music player is built with a 1.5-inch OLED display and supports audio formats, including wma , wav , adpcm and mp3. The GoGear Spark features a 27-hour battery life, display edge-located buttons, FullSound audio system, voice recorder, and comes with a silicon case and clip.