The KM-Q Light Meter with Back Display by Keks is a highly compact OLED light meter specifically designed for analog cameras that lack functional light meters. Its diminutive size, comparable to that of a sugar cube, redefines the concept of portability. The device features an aluminum casing with a 0.42" OLED display on the rear, complemented by an elegant chrome finish that enhances the aesthetic of any camera body. It operates on a built-in rechargeable 120mA battery, which can be charged via a USB-C port, allowing for up to 20 hours of uninterrupted use. The KM-Q employs a VEML7700 sensor for high-accuracy ambient light measurement, coupled with a 16-bit digital resolution, ensuring superior accuracy and reliability in readings. Additionally, it offers a 30° average metering angle, which corresponds to the view of a 50mm lens. Meter type: ambient, reflective light Metering angle: 30° average metering (approximately 50mm lens view) ISO range : 50-8000 Aperture range: f/1.0 to f/64 Shutter speed range: 1/6400s to 30s Display: 0.42" OLED Battery life: over 20 hours with display on, over 6 months on standby Battery: 3.7v 120mAh Charging time: 30 min Charging port: Type C Three different shoe mount sizes