An essential part in digital photography process for photographers or hobbyists. | The grey side works for the exposure correction and white side for white balance setting. | By placing a gray card in the scene to be photographed, oriented at a defined angle relative to the direction of the incident light, and taking a reading from it with a reflected light meter, the photographer can be assured of consistent exposures across | Gray cards can be used for in-camera white balance or post-processing white balance. | Provide a standard reference object for exposure determination in photography.

Cassette to MP3 Converter - Lightweight and portable. | Cassette capture can can directly transfer your old cassettes or tapes to your USB Flash Drive(NOT included) in MP3 format. | The USB flash driver can be connected to other devices to play the recorded music such as computer, MP3 player, portable speaker, etc. | You can play the tape with this cassette capture, and the cassette capture can also be used as a music player. | Easy charging - Support battery powered and USB powered.

✔【4 RANGE】: 0/200/2,000/20,000/200,000 Lux | ✔【CONVENIENT】: Handheld design, lightweight and compact, easy to adjust; Over-range indication, Unit and Sign display for easy reading | ✔【HIGH ACCURACY】: Rapid response, Auto Zeroing | ✔【FUNCTION】: Data Hold & Peak-Data hold switches, Low power consumption, Short rise and fall time | ✔【WIDELY APPLIED】: For light test of public stores, library, museum, lamp factory, photo shooting, stage disposition of light, etc.