Features: Cranking for power, no external batteries are needed Built-in rechargeable battery Environmental friendly Economy and safety Reuse limitlessly Low noise but high efficiency; low power consumption Long working time Digital display Convenient to handle More accurate frequency Extra long antenna enhance reception ability Simple outline and delicate appearance Functions: Cranking for power generation Charged by external adapter Digital display of frequency, 10 band: FM/MW/SW 1-8 Digital clock, timing power on Charge digital devices and mobile phone Lighting function Technical parameters: Sensitivity: FM: better than 10uV MW: better than 1.5mV/m SW: better than 10uV Reception scope: FM: 87(+0–1)-108(–0+1)MHz MW: 520(+0–10)-1620kHz SW: 5.9-21.85MHz Audio frequency output power: 100mW Radio working time after 1 minute cranking (2.5 - 3 circles): 18 to 27 minutes Lighting time after 1 minute cranking (2.5 to 3 circles): 27 to 36 minutes Maximum luminous flux Charged by outside power Input voltage Charging interface Fully charged time Main parts lifespan: Switch: 5,000 times Whole unit: 5 years Plastic part: 5 years Antenna length (external part): about 37mm Product size: 156 x 76 x 58mm Product weight: 203g