we can supply Digital Tire Gauge Here are brief introduction of our company: Richtek is a professional company integrating with R&D, manufacture and service. Since its incorporation, it has been achieving steady and rapid growth and has become one of the enterprises exerting influence in the industry by adopting innovation, specialization and perfect quality as its core of development, ceaselessly designing unique appearance of products and exploring functions of products, Specification: 1.Measurement range: ?Psi: 0.5-99.5 ?Bar: 0.05-6.86 ?kgf/cm2: 0.05-7.00 ?Kpa: 4-686 2.Accuracy: ±1psi when 0-100 Psi, 25°C 3.Distinguish ratio: 1psi 4.Power: lithium button cell(CR2032 1x3V) 1pc 5.Working temperature: '-10°C +50°C 6.Storage temperature: -20°C +70°C 7.Battery Included 8.Certification: CE 9.Patent No.: ZL200430092474.0