Optimized for USB based digital music players, portable game consoles and smart phones Compatible with rechargeable Brunton Sync Tech™ amps and task lights Integrates with Brunton power packs for even more off-the-grid performance 5 volts, 1000mA output Thin, lightweight and compact Independent polycrystalline solar panels to maximize performance Water resistant, durable rubberized shell Internal rechargeable lithium polymer battery Compatible with rechargeable Brunton SyncTech™ enabled headlamps and task lights Power gauge and auto shut off Output: 5 volts, 1000mA Folded dimensions: 4.5x9x1 Weight: 14.8 oz Capacity: 3200 mA Output: 1000mA/5v (USB 2.0 compatible) Dimensions: 3.5x3.75x.75 Weight: 5.5oz