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IPX-4 Splash Proof: Protected against spraying water from all angles at 10 liters/min at a pressure of 80-100kN/m2 for 5 minutes
Four-hours of audio playback at mid-volume and continuous charging of iPod and iPhone in battery mode
Rechargeable Battery: Two cell lithium ion 2000mAh, 7.4V; 4-hour recharge time via AC; 10-hour recharge time in direct sunlight;
Two full-range speaker drivers with a total output of 11W
Solar powered charging dock, compatible with iPod and iPhone; Audio line input for connecting iPod shuffle, MP3 players, etc.