Specification BatteriesRequired : 1 Brand : UINMYREO BulletPoint1 : -Light brightly and big capacity of battery BulletPoint2 : -Light and handy lamp; more effectively. BulletPoint3 : -Using rechargeable lithium battery,light weight,longevity and the more comfortable carry,it is suitable for all kinds of surgical operation BulletPoint4 : Rechargeable lithium-ion batteries BulletPoint5 : The most popular model among dental students ,dental hygienists and dentist. Wide field of view and generous depth of field with high enough power for daily procedures Color : Red ExternallyAssignedProductIdentifier : 4288682592075 ItemName : Portable Battery Charging Plug Loupes Lab Medical Magnifier Magnification Binocular Belt-Clip (Red) ItemTypeKeyword : professional-dental-and-surgical-loupes MagnificationStrength : 2.5 multiplier_x Manufacturer : Etools Material : Aluminum ModelName : 1 ModelNumber : 1 NumberOfItems : 1 PartNumber : C1 ProductDescription : Specification: Working temperature:5-40ºC Battery:3.7v2200mah Atmospheric pressure:86-106kpa Temperature:-20-50ºC Rated voltage: input AC100-240V