Features 1). Environmental friendly: it does not use dry cells (batteries) and therefore does not pollute the environment. 2). Save energy: charge by dynamo and no need external electric power. 3). Multi-function illuminate: used as spotlight or glow caution light. 4). Radio: you could select your favorite channel. 5). Emergency power: built-in dc standard input and output socket, could emergency charge for mobile phone, mp3, digital camera etc. 6). Alarm: while glow caution glittering, alarm sounding. 7). Waterproof: it has waterproof function with ip34 degree. 8). Safety: low voltage of power self supplied system. 9). Portable: novelty small light and easy to operate. 10). Useful: used in vehicle tourism camping mine and other emergency situation. Gift box.