The lamp for engineers and technicians no matter whether you inspect the undercarriage of a car replace a fuse or are an industrial worker the led lenser p4 bm with blue moon focus system does a good job the lamp can be attached to shirt or work wear as fast as lightning and weighs so little that youll hardly notice it however you will notice its brilliant super bright light which you can focus by moving the lamp head speed focus the led lenser p4 bm is operated with two standard i