This portable device lets you charge your phone or tablet wherever you are! This solar phone charger includes a compass and LED flashlight all in one portable unit. Awesome for outside activities such as camping, hiking and even for emergency use. Made of durable and reliable ABS, PC and Silicone material it guards against rain, dirt and being dropped. Compatible with your iPhone, Samsung, HTC, Nexus, Go-pro Camera, Tablets and other USB devices. Smart Express Charge Just connect your device to the solar power bank and it will automatically detect the charging requirements for your device providing a max speed up to 2.1A per port. This device allows for simultaneous charging of 2 devices Features: – Battery type: Li-polymer battery – Solar power: Single crystal 1.5W – Application type: commonly used – material: ABS+PC+ Silicone – Capacity: 15000mAh – Input: DC 5V/1.0A – Output: DC 5V/1A DC 5V/2.1A – Charging time: 12h Please Note: In order to fully activate the battery, please charge it via outlet or computer for 10 hours at least for the first 2-3 uses. Fully charged by an outlet takes approximately 10 hours. For safety, DO NOT leave the power bank charging in car in case of high temperatures Do not charge other devices while charging this unit. The energy transformation from solar to electricity is rather slow and the solar charging speed is subject to sunlight intensity and panel conversion rate. Therefore for daily use we highly recommend charge it via wall outlet.