With ON/OFF switch, color temperature adjustment, and brightness adjustment knob Three color adjustment (warm light, white light, soft light), provides more natural light for different skin tones and environments A phone or tablet with a length or width of 11.5-18.5cm can be mounted on this clamp holder Widely used in portraiture, makeup, YouTube video, studio shooting, vlogging, portrait photography and live streaming, etc. Specification: Light ring size: 26cm Material: ABS+PC Number of lamp beads: 120 Power: 10W Color temperature: 3000-6000K three colors + stepless dimming Lumen: 1000lm Color rendering index Ra: 90+ Power supply mode: USB cable, 2m Tripod stand height: 160cm, stretchable and retractable Retractable length: 55cm Tripod material: Metal The clamp can be stretched: 12-19cm, universal for most tablet models and phone models