Double stereo speaker, sound and alt-bass clearly. Sound function with clearly. Specifically designed for DSi. With clear sound output. Speaker parameters: 108+-3db at 1000hz/1.26v, Resonance frequency FO 250hz+-20%, Frequency response: 20-20KHz, Distortion 5%. Microphone parameters: Sensibility 58+-5db, S/N <= 60db, Frequency response 30-16,000hz.
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