Doomo Meter S - New OLED design (Chrome)The Doomo Meter S is a light meter with an OLED display screen. It has a built-in lithium battery and Type-C charging. All parameters are displayed on the OLED screen. Meter S is more compact, meters more quickly, and is easier to use than Meter D. The most noteworthy aspect of meter S is real-time metering. The speed is quite quick, and it can totally measure light without manual intervention.The difference between Meter D and Meter S Meter S: The Meter S is a light meter with OLED display screen, all parameters are displayed on the OLED screen, built-in lithium battery, Type-C charging. Compared with Meter D, Meter S has a smaller size, faster metering speed and simpler operation. Real-time metering is the biggest feature of meter S. It can meter light completely without manual operation, and the speed is very fast. Meter D:The dual-dial light meter on the Meter D is similar to the M gear of a camera. The parameters are all engraved on the mechanical turntable, you need to manually turn the turntable, and use the indicator light to determine the current exposure combination. Driven by CR1632 button battery, the standby battery life is very long, up to six months or one year (depending on the frequency of use). The exterior design of Meter D looks better, and it matches the old camera better. It should be noted that the accuracy of the two light meters are the same. If you want to learn more about the two light meters, you can search for our product models on YouTube, and there are related evaluation videos Specifications :Material: Zinc, Aluminium AlloyColor : BlackMetering Range: Average 30°EV Range: 1-22Moynt Position: Left, Centre, RightWeight : 40gMain Dimensions: 36*25*13mmBattery Life : built-in 120mAh lithium battery,12hrs non-stop, 1.5hrs to fully chargeISO Range : 8,10,12,16,20,25,32,40,50,64,80,100,125,160,200,250,320,400,500,640,800,1000,1250,1600,2000,2500,3200,4000,5000,6400Speed Range : 30,15,8,4,2,1,1/2,1/4,1/8,1/15,1/30,1/60,1/125,1/250,1/500,1/1000,1/200,1/4000,1/8000Iris Range: 1,1.2,1.4,1.7,2,2.6,2.8,3.5,4,4.5,5.6,6.7,8,9.5,11,13,16,19,22,32