-100 total watts - two 50 watt (18-22V) panels chained together and connected by a hinge. -Constructed with strong tempered glass and aluminum frame with extra corner protection. -A protective canvas bag is included for easy transportation. -What the Boulder 100 Briefcase can charge: The solar panel does not store charge, it simply produces energy when exposed to sunlight. Plug it in to recharge a portable power station. The Boulder 100 Briefcase works perfectly for recharging Goal Zero Sherpas and Yetis. -Which Goal Zero products work best with Boulder 100 Briefcase: Sherpa 100: 3-4 hours / Yeti 200X: 3-6 hours / Yeti 500X: 8-16 hours / Yeti 1000 Lithium: 20-40 hours / Yeti 1400 Lithium: 28 -56 hours / Yeti 3000 Lithium: 60-120 hours -Measurements and Weight: 70.0 x 110.4 x 4.4 cm (unfolded) / 11.7 Kg