The rechargeable 2,400mAh battery in this multi-functional item powers the lantern and the flashlight, so you wont need to buy batteries. It also functions as a power bank to charge your phone. The flashlight and the lantern both have adjustable brightness levels and functions. An additional feature of this model is the solar panel, which can also be used to recharge the battery. The solar charging is quite slow, and simply functions as a back-up option when you dont have power available to charge the battery, or if youd like to leave it charging with exposure to sunlight for a period of time. 21 ( l ) x 22.4 ( w ) x 6.6 ( h ) cm ABS & PP Power Bank: lithium polymer battery capacity: 2,400mAh 1 x USB A & 1 x Type C port Type C input: 10W (max): 5V/1A, 5V/2A USB A output: 5W: 5V/1A with solar panel includes USB A to Type C cable LED torch: 160 lumens 2 brightness levels and SOS function lantern: 400 lumens 2 brightness levels and red & blue blinking emergency light packaged in a Swiss Cougar gift box