Revive 4000mAh Solar Power Bank Phone Charger with Emergency Backup Solar Charging Panel 1.5A USB Portable External Battery Pack - for iPhone, Samsung Galaxy, Smartphones, GPS, Cameras, More BE PREPARED in emergencies and power outages with an external backup & portable battery source for your mobile USB-powered electronics -- recharge a smartphone 1-2 times before refueling the unit RECHARGE USING SUN when outdoors or in an emergency power outage situation by placing the SL4000 in direct sunlight for 24 hours and take advantage of a natural and free source of energy SLIM AND QUALITY metal construction design to fit in small spaces and withstand travel rough tumbling UNIVERSAL USB compatibility with built-in standard USB port -- use the included MicroUSB cable to recharge compatible devices or use your personal USB cable (Apple Lightning, Type C, Mini USB, etc.) TECH SPECS: 3-Year Manufacturer's Warranty | Battery: Lithium-ion 4,000mAh | Input: USB 5V = 0.5A; Solar 5V = 0.14A , 0.7W | Output: 5V = 1.5A | Charging time: 6 hrs by USB; 24 hrs by direct sunlight <span class="a-text-bold">Smartphones</span> (up to 1.5A output) <span class="a-text-bold">Bluetooth hands-free headsets</span> (Mpow, Motorola, Samsung, Plantronics, etc.) <span class="a-text-bold">Bluetooth earbuds</span> (JBL, Jaybird, Monster, Beats, iFrogz, etc.) <span class="a-text-bold">Smartwatches/Fitness trackers</span> (Fitbit, Garmin, Pebble, Coffea, Ronten, etc.) <u>Battery</u>: Lithium-ion 4,000mAh <u>Input</u>: USB 5V = 0.5A; Solar 5V = 0.14A, 0.7W <u>Output</u>: 5V = 1.5A