ZPAQI LED Lamp Light Headband Headset for Head Jeweler Magnifier Magnifying Glass Loup

5 Replaceable/Interconvertible lens with different magnifications marked in the middle <br> LED light can be rotated about 60 degree and light source box with battery compartment is detachable <br> Adjustable for head band ensures more comfortable and tight for head wearing <br> Light source box can be used separately as lighting source after being dismantled <br> Widely used in mechanical processing, electronic repair, jewelry appraisal, timepieces repair and miniature engraving, etc <br> <br> <b>Specifications:</b><br> Single-plate lens magnifications: 1.0x, 1.5x, 2.0x, 2.5x, 3.5x <br> Bi-plate lens magnifications: 3.0x, 4.0x, 4.5x, 5.0x, 5.5x, 6.0x <br> Magnifications are marked in the middle of lens <br> Table below denotes the distance proportion between magnifications and viewed objects: <br> 　 <br> Magnifications Distance to viewed objects <br> 1.0x 300 ~ 350mm <br> 1.5x 240 ~ 260mm <br> 2.0x 215 ~ 235mm <br> 2.5x 205 ~ 225mm <br> 3.0x 160 ~ 180mm <br> 3.5x 135 ~ 145mm <br> 4.0x 125 ~ 135mm <br> 4.5x 110 ~ 130mm <br> 5.0x 100 ~ 120mm <br> 5.5x 80 ~ 95mm <br> 6.0x 60 ~ 85mm <br> LED: 2 Pieces <br> Lens: 5 Pieces <br> Battery: 3 * 1.5V AAA batteries (NOT included) <br> for Head circumference: Adjustable <br> Lens material: High quality PC <br> Headpiece material: Environmental for protection acrylic <br> Applications: Timepiece repair, jewelry appraisal, miniature engraving, etc. <br> Color: Black + White <br> Size: 25.5*20.5cm/10.03*8.07" <br> Quantity: 1pc