Feature: 1. [APPLICABLE SCENES] Suitable for equipment with insufficient space on the left side of cold shoe or hot shoe. 2. [SHUTTER PRIORITY] The camera light meter adds a shutter with priority measurement mode, with a wide range of applications. 3. [45° AVERAGE METERING] 45° average metering method, reflective type, can also be set to incident mode, easy to operate. 4. [CLEAR DISPLAY] The reflection light meter has a 0.96in organic light emitting diode, which can display clearly. 5. [POWER SUPPLY] Built in 300mAh lithium battery and equipped with USB cable, convenient power supply. Specification: Item Type: Camera Light Meter Material: ABS Model: M08 Metering Method: 45° average metering (reflective, can also be set to incident mode) Display: 0.96in Organic Light Emitting Diode Battery Model: Lithium battery Battery Capacity: 300mAh (built in battery) Charging Specification: 5V/450mA ISO Range: ISO6-ISO8000 Aperture Range: F1.0-F64 Shutter Range: 30S-1/8000S Endurance: 26 hours of continuous metering Working Current: 8mA-10mA Standby Current: 3.5uA Reflection EV Range: -2.0-19.0 Incident EV Range: -4.5-15.5 Exposure Compensation Range: -5.0-+5.0 . Package List: 1 x Light Meter1 x USB Cable1 x Plug1 x Bolt Stud Note: Do not overload to use.