Various complex places, six color temperatures for comparison. Professional color display for different objects. Convenient and fast operation with button controls to select different color temperatures. Professional-grade lighting with a color temperature stick designed to mark professional lighting colors. Equipped with USB-C charging port for charging and use anytime, anywhere, without the need to find a power socket, offering greater convenience and efficiency. Product name: Portable Color Temperature Stick Light source type: COB Product power: 3W x 6 groups Charging time: Approximately 1 hour (varies by charger) Brightness settings: 2700K to 6000K Color: Black Material: PC Package Contents: 1 x Portable Color Temperature Stick Note: Other items not included. Light reflection and differences in display screens may cause slight variations between the item's actual color and the image shown. Measurement error allowed is +/- 1-3 cm. Product appearance and printed text may vary slightly by batch, but this does not affect performance or functionality.