Inhouse product
Power Supply: USB PortPower: 5WAdjustment Range: Stepless adjustmentFlash Index: 20-200mmInternal Diameter: 14cm/ 3.94"Outer Diameter: 20cm/ 6.30"Light Color: Warm light, White light, Warm white lightInterface: 1/4 universal screw holeColor: BlackPhone holder extension range: 65mm-100mm