Features Environmental friendly: it does not use dry cells (batteries) and therefore does not pollute the environment. Save energy: charged by dynamo or solar energy, no need external electric power. Multi-function illumining: used as spotlight or nightlight or glow caution light. Radio: you could select your favorite channel. Emergency power: built-in dc standard input and output socket, could emergency charge for mobile phone, Mp3, digital camera etc. Swivel headlight: headlight could revolve within 180. Alarm: while glow caution glittering, alarm sounding. Gift box.