Solar Charger Sheath for Phone Features: Solar Charger sheath capacity: 3.7 V 1000 mah Output voltage: 5 V (max) Output current: 500ma Charge voltage: solar battery 5.5 V or USB DC 5 V Charge current: 70ma from source of solar battery or 500 ma from source of USB. Charging time from source of computer USB port is around 2 hours. Peak power supplied by photocell: 0.4w Operation: 1. Insert Phone into the interface connector of the solar charger sheath. Turn on the power switch of Solar Charger, the solar charger will charge into Phone. The battery charge indicators will illuminate the status of battery energy, in which I stands for 25% of full charged battery, I II stand for 50% of full charged battery, I II III stand for 100% of full charged battery. 2. After Phone is fully charged, please press the sheath power switches to OFF. 3. Connect USB cable to the computer to charge for solar charger sheath, with power increasing, the indicators will change according to the charged energy. 4. Put the Solar Charger in sufficient sunshine, the solar panel faces the sunshine, turn on the switch to (ON), it will charge for the iPhone battery cell directly. Turn off the switch to (OFF) the electricity will be stored to internal battery automatically. Under sufficient sunshine charging within12 hours, the Solar Charger will be full. 5. When power indicator is off, the electricity of internal battery is used up. It can be charged by method of 3 and 4.. Notes: 1. Use Solar Charger Sheath for the emergency battery backup only. Try to use Phone 3G's battery for normal operation. When Phone 3G's battery electric energy is insufficient, just turn on the charging switch "D" to charge. 2. Please turn off the charging switch "D" in time when Phone 3G's battery electric energy is energetic.(can save built - in battery electric energy in the sheath) 3.While not using, please put charger under the sunshine. Electric energy of internal battery is supplemented. 4. Please make sure to use original AC-USB/DC adaptor for charging Exemption Clause: 1.Prevent Phone 3G sheath from putting in humidity or causticity conditions. Please don't use in the temperature of higher than 70 C 2.Don't insert and pull out iPhone3G from the charger sheath with very heavy strength. Don’t crush and scrape the charger sheath. 3.Keep out the reach of minor children If any serious results caused by violating above mentioned prohibitive clauses. We will not bear relevant responsibility.