Kl4ex 1, en atex certification. 2, 25 yrs specilized in miners cap lamp. 3, lighting time>15 hours; max illumination>4300lx. 4, ip54 protection grade;explosion proof; lithium manganic. 5, service life>2yrs; rechargeable battery-lithium manganic. 6, 0.65 kg; rated voltage 3.7v. 7, we also welcome customized.
