FEATURESOutdoor emergency、 disaster relief、 home entertainment and gifts for relatives. You do not have to worry about without electricity problems in camping and outdoor、 put one in the car or carry always will be your highlights. Specification 5LED、 life 100、000 hours Dynamo: 5V/300-400MAH Radio Frequency: FM :87.5 --- 108MHZ or 76-90MHZ AM :520-1710khz Greater than 90dB siren USB IN / USB IN 5V DC OUT 5V charging mobile phones and digital products charging port interfaces. Rechargeable Battery: 3.7V/120MAH Tips:(When the compass near the body、 because the magnetic field causes of inaccurate phenomenon will occur、 please hand cranks open normal use)