Liquid Filled, Each On A Blister Card , 17x5.9x2.1cm Aluminum Cast Case Pp Glass , Red Led Light W/on-off Switch , Side Ruler , Magnifying Glass , Made Of Aluminum , Abs And Transparent And Acrylic , Compass Is Made By PVC Magnetic Material White Mineral Oils. , Uses One Lithium Battery Style Cr2025 (included)