beileshi magnifying glasses for close work,led light magnify lens (1.5x 2x 2.5x) flip up and included anti-collision case, magnifier hands free for reading/miniscule/find splinters/flying hook beileshi <b>not a substitute for prescribed eyeglasses<br><b>led rechargeable spectacle magnifier</b><p> <b>other features</b><br> ▶front lenses can beflipped, without using double lenses combination, the lenses need not be removed.front lenses can be flipped up using a single magnifying lens.<br> ▶efficient rechargeable batteries, one hour recharging can fill the battery, support the soft light of led to work for 8 hours continuously, and the strong light to work for 4 hours. it greatly prolongs the working time of led, reduce the waste of resources,and is more environmentlly friendly.<br> ▶ergonomics glasses bracket, comfortable to wear, better fixed magnifying glass in front of the eyes, effectively prevent falling off.long-term work is more relaxed.<p> <b>product specifications</b><br> lens material:acrylic<br> lens profile specification: 116mmx42mm<br> focal length:1.5x 357mm 2.0x 274mm 2.5x 204mm<br> 3.5x 158mm 4.0x 136mm 4.5x 125mm<p> <b>safety precautions</b><br> 1.do not put the magnifying glass in the direction of direct sunlight,so as not to cause fire.<br> 2.do not use the magnifying glass to observe the sun so as not to burn your eyes.<br> 3.please clean the lens with a soft cloth or a mirror paper.<br> 4.do not use alcohol, gasoline and other chemical liquids to wipe lenses and shells.<p> ▶if you have any problems or advice about our product, please feel free to email us.<br>