4 Power Supply Methods Features solar charging, hand crank generator, 4000mAh rechargeable lithium battery, and compatibility with 3x AAA batteries (not included), ensuring reliable power anytime, anywhere Wide AM/FM/SW Radio Coverage Supports AM (520-1620KHz), FM (87-108MHz), and SW (4.75-21.85MHz) frequencies, keeping you updated and entertained in any situation Enhanced Signal Reception Equipped with a high-sensitivity antenna for clear and stable signal reception, whether tuning into local or international broadcasts Multi-Function Lighting Comes with a 1.5W LED flashlight and a 2.0W reading light, ideal for nighttime use, camping, or emergencies Built-In SOS Alarm for Emergencies Includes an SOS emergency call alarm to alert others of your location in critical situations, enhancing safety during outdoor adventures Private Listening Option Features a headphone jack for personal audio use, making it suitable for both quiet and emergency scenarios Specifications: Material: ABS Input power: DC 5V, 2A Output power: 5V, 1.7A Battery capacity: 4000mAh Radio frequency: AM: 520-1620KHz, FM: 87-108MHz, SW: 4.75-21.85MHz LED lighting: 1.5W, 400 Lumen Reading light: 2.0W, 250 Lumen Speaker: 4 3W Product size: 153x49x75mm Function: LCD digital display, solar powered, speaker, SOS, high sensitivity antenna, headphone jack, hand crank Power supply: built-in lithium battery 4000mAh, also can use 3 x AAA batteries (not included) Full-charged playback time: more than 20 hours (70% volume) Full-charged flashlight time: 65 hours Full-charged reading light time: 70 hours Emergency radio playback time (hand crank for 5 minutes): 15 minutes Outdoor solar emergency charging (8 hours continuously, depending on the intensity of sunlight): about 2 hours Charging time: 4 hours