Eton has released Mobius Solar Charging Case that will charge your iPhone 4 using solar energy. Designed with Monocrystal solar panel, Eton Mobius Solar Charging Case promises to double your iPhone 4’s talk time, offering slim form factor and durable protective case.

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No word on pricing and availability yet. Expect Eton to release Mobius Solar Charging Case in first quarter this year.

[ Source: Inhabitat ; Eton ]