Specification BatteriesRequired : 1 Brand : Vinckolor BulletPoint1 : 1. One-key measurement is available. There is no need for zero adjustment. It's easy to operate and can professionally measure the R457 blue-white degree. BulletPoint2 : 2. With a caliber of 4mm, it can meet the detection requirements of most sample sizes and is suitable for measuring bed sheets, quilt covers, fabrics, textiles, papers, coatings, plastics and powders. BulletPoint3 : 3. It is equipped with a durable lithium battery, which can conduct 7,000 consecutive measurements after being fully charged. BulletPoint4 : 4. It supports connection to a mobile phone APP, enabling the measurement data to be saved in the cloud. BulletPoint5 : 5. The whiteness meter has a long service life. Adopting an LED light source, it can usually be used for more than 10 years. ExternallyAssignedProductIdentifier1 : 809762101501 ExternallyAssignedProductIdentifier2 : 0809762101501 IncludedComponents : Whiteness meter, calibration cover, data cable, instruction manual ItemName : Whiteness Meter WSB-1, Suitable for Testing The Whiteness of Textiles, Paper, and Powders ItemPackageDimensions_Height : 8.636 centimeters ItemPackageDimensions_Length : 30.734 centimeters ItemPackageDimensions_Width : 23.114 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : science-lab-photometers-and-light-meters Manufacturer : VINCKOLOR MeasurementAccuracy : Varies by parameter ModelNumber : 486101-PW-K NumberOfBoxes : 1 NumberOfItems : 1 PackageLevel : unit PartNumber : WSB-1 ProductDescription : The Whiteness Meter, model WSB-1, is an outstanding product with multiple remarkable features. It allows one-key measurement without the need for zero adjustment, making the operation extremely simple and enabling professional measurement of R457 blue-white degree. With a caliber of 4mm, it can meet the detection requirements of most sample sizes and is suitable for measuring bed sheets, quilt covers, fabrics, textiles, papers, coatings, plastics, and powders. Equipped with a durable lithium battery, it can perform 7,000 consecutive measurements after a full charge. It also supports connection to a mobile phone APP, allowing measurement data to be saved in the cloud. This whiteness meter has a long service life. Thanks to its LED light source, it can usually be used for more than 10 years. Technical Parameters: Product Name: Whiteness Meter WSB-1 Measurement Geometry: 45/0 Measurement Index: Blue-white Degree R457/ISO2470 Illumination Light Source: LED (Full-band Balanced LED Light Source) Measurement Aperture: Diameter 4mm Resolution: 0.1 Measurement Range: 0 - 200 Zero Drift: < 0.1/10min Indication Drift: < 0.1/3min Measurement Repeatability: < 0.1 Measurement Time: 1.5s Interfaces: USB, Bluetooth Screen: IPS Full-color Screen (135 * 240, 1.14inch) Power Supply: 460mAh, capable of conducting 7,000 consecutive measurements after a single full charge Software Support: Android, iOS Weight: Approximately 75g