Main Features‎:‎‎- Especially suitable for emergency occasions when you work or travel in the wild or power‎-cut occurred‎- High anti‎-wear PET solar panels‎,‎ durable to use‎- Also can be charged by using wall AC adapter and USB port of your computer‎- Protection for overcharge‎,‎ overvoltage‎,‎ overcurrent and short circuit‎- With water resistant‎,‎ dust proof‎,‎ shock and drop resistant functions‎- No built‎-in battery‎,‎ don‎'‎t worry about the security problems caused by heat and strong light Parameters‎:‎Solar panels peak power‎:‎ 21WInput‎:‎ 5V 2AOutput‎:‎ 18V 1A ‎(‎ max ‎)‎Solar energy conversion rate‎:‎ 22pct to 25pctOutput interface‎:‎ USB Product weight‎:‎ 0.612 kg Package weight‎:‎ 0.612 kg Package Size‎(‎L x W x H‎)‎‎:‎ 32.50 x 19.10 x 4.00 cm / 12.8 x 7.52 x 1.57 inches Package Contents‎:‎ 1 x Portable Solar Charger Pack‎,‎ 1 x Micro USB Cable‎,‎ 2 x Attached Hook‎,‎ 1 x Car Charger‎,‎ 1 x Transfer Cable‎,‎ 10 x Detachable Plug‎,‎ 1 x Alligator Clip‎,‎ 1 x English ‎- Chinese User Manual