Specification BatteriesRequired : 1 Brand : Songzi Optics BulletPoint1 : 2.5X Loupes Field Of View: 150mm,Depth of field: 200mm Working Distance R(300mm -500mm) BulletPoint2 : 3X Loupes Field Of View: 140mm. Depth of field:200mm Working Distance R(300mm -500mm) BulletPoint3 : 3.5X Loupes Field Of View:130mm.Depth of field: 200mm ,Working Distance R(300mm -500mm) BulletPoint4 : Buyer can use PDCheck AR APP on phone, and save PD data screenshot, there are Far PD and Near PD. If you are a dentist, you need to choose Far PD, but need to reduce 4mm, for example Far PD is 66mm, that mean dental working distance Near PD should be 62mm, then you need to choose 62mm Near PD variation when place order. If you are a surgeon, you can use the APP Near PD data directly. BulletPoint5 : If your Near Pupil distance is not included into loupes variations, please choose Other Near PD, and leave your Near interpupillary distance in the message and we will customize it according to your size. Color : Black Titanium Frame Department : 男士 ExternallyAssignedProductIdentifier : 9344674212729 ImportDesignation : Imported ItemName : 3.5X Songzi Optics Square Lens Titanium Frame TTL Dental Surgical Loupes Customized (Black Titanium Frame, Near PD 56mm) ItemPackageDimensions_Height : 16 inches ItemPackageDimensions_Length : 23 inches ItemPackageDimensions_Width : 13 inches ItemPackageQuantity : 1 ItemTypeKeyword : professional-dental-and-surgical-loupes MagnificationStrength : 3.5 multiplier_x Manufacturer : Songzi Optical Co.,Ltd MetalType : other ModelName : Szttlgrey ModelNumber : SZTTLN253035 NumberOfItems : 1 PartNumber : SZTTLTTNEW ProductDescription : Songzi Optics SZTTL series has long working distance, Wide Field Of View,very comfortable to work with. LED illumination system are available.Multi-layer anti-reflection coating provides extremely high resolution.Anti-glare, scratch-resistance optic lens ensure long time no-trouble use. Helping to reduce eyestrain.You can improve your posture and avoid stooping. Multiple magnification levels loupes offer performance matched to your requirements.Multiple magnification levels enable you to see more,spot problem earlier and offer even higher levels of precision treatment. Exclusive Telescope Design with Precision Coated Optics for the best possible vision through the lens. Warm Tipes: Buyer can use PDCheck AR APP on phone, and save PD data screenshot, there are Far PD and Near PD. If you are a dentist, you need to choose Far PD, but need to reduce 4mm, for example Far PD is 66mm, that mean dental working distance Near PD should be 62mm, then you need to choose 62mm Near PD variation when place order. If you are a surgeon, you can use the APP Near PD data directly.If your Near Pupil distance is not included into loupes variations, please choose Other Near PD, and leave your Near interpupillary distance in the message and we will customize it according to your size. ProductSiteLaunchDate : 2012-10-07T14:00:00.000Z Size : Near PD 56mm Style : Square SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1