Specifically designed for emergency situations, the KA500 offers different methods to power itself. Those methods include AC/DC adapter, three AA batteries (not included), the built-in rechargeable Ni-MH battery which can be charged from the AC adapter, by hand cranking, by solar panel or by a PC, and the dynamo hand crank which not only can keep the built-in battery fully charged but also provides power for the radio even when no battery is installed. With its revolutionary design and versatile functions, it’s an ideal companion for emergency preparedness purposes, outdoor activities as well as traveling. Unlike any other emergency radios previously manufactured by Kaito, the KA500's rechargeable batteries are replaceable, extra battery packs are available for purchasing on Kaito's website. At the heart of the KA500, there is an internal generator that recharges the internal replaceable Ni-MH battery pack and powers the radio, flashlight and reading lamp. Also, by plugging your cell phone into the jack on the back of the radio, you can use the crank to power your phone. Not only that, this radio also features an USB port, which you can use either to charge your radio with a PC or charge other electronic gadgets with the hand crank. You can use the KA500 to receive a wide range of broadcasting including AM, FM, shortwave and NOAA weather stations. The 7-weather channels are pre-programmed and numbered from 1-7, you can easily and conveniently tune into the stations by turning the switch, no more guess work involved. Compared with any other solar-powered emergency radios, the KA500 has its unique 180-degree adjustable solar panel, which can maximize sunlight exposure to power up the radio or charge the internal Ni-MH batteries. On the back side of the solar panel flipped up, there’s super-bright 5-LED reading lamp. Features: 5-way powered emergency radio: AC, battery, hand crank, solar, computer AM/FM/Shortwave radio and 7 pre-set NOAA weather channels with alert 180-degree adjustable solar panel High-capacity replaceable rechargeable battery Rubberized water-resistant housing + 5-LED reading lamp + Flashlight Specifications: FM: 88 - 108 MHz AM (MW): 530 -1710 KHz NOAA Weather: 1-7 SW1: 3.20- 8.00 MHz SW2: 9.00- 22.00 MHz Output power: 200 MW peak power using built-in speaker Headset jack socket: 3.5 mm External DC supply socket: 6 mm (positive center) Sensitivity FM ≤ 20uV MW ≤ 2.5mV SW ≤ 30uV Rechargeable batteries: 3 NI-MH batteries 600mAh Size: 204 x 128 x 66 MM (8 x 5 x 2.5 inches) Weight: 1.8 Lbs What's in the box: KA500 emergency radio User manualAC adapterCarrying Case