... fishing, hiking, nocturnal, night lighting, standby power supply, SOS with alarm whistle or flashing help. With special clip design for bikes, it can ... MP3 speaker,Without earphone, can be a high quality speaker with high volume. 3. Flashlight mode option, dim light, glare ... External power, support for 5V external power6. Suitable for bicycle with special clamp to fasten on bicycle for music playing or ...