Cool Knight Solar Panel Charger 5000mah High Capacity Power Bank Waterproof Shockproof/dust Proof Solar Power Bank Backup Battery Charger for Iphone/samsung/htc Most of Android Smartphone and Tablets and Other Mobile Devices (Black and yellow) Used advanced Solar energy technology, can recharge itself under sunshine,environment friendly.Can be charged using an external power source (USB AC adapter) Airframe adopt environmental protection silicone and ABS and pc, the cooling performance is good, wear-resisting, can better protect the power supply.Have shock-proof, waterproof, dustproof, and other functions Personality football texture design on the back, anti-skid protection effect,equipped with convenient hidden USB/micro charging interface Hook type design, it is more convenient to carry,convinient for you to charge the device in outside Each power bank printed our brand"cool knight"