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usb interface [no plug]](USB接口【无插头】) usb interface [plug]](USB接口【加插头】)

45cm three-color infinite [dimming and color-changing]](45CM三色无极【调光调色】) 50cm three-color infinite [dimming and color-changing]](50CM三色无极【调光调色】) 50cm three-speed natural light [adjustable brightness]](50CM三档自然光【可调亮度】) 50cm three-gear white light [adjustable brightness]](50CM三档白光【可调亮度】) 50cm single-level natural light [dormitory learning]](50CM单档自然光【宿舍学习】) 50cm single-level white light [suitable for learning]](50CM单档白光【适合学习】) 45cm three-speed natural light [adjustable brightness]](45CM三档自然光【可调亮度】) 45cm three-gear white light [adjustable brightness]](45CM三档白光【可调亮度】) 45cm single-level natural light [dormitory learning]](45CM单档自然光【宿舍学习】) 45cm single-level white light [suitable for learning]](45CM单档白光【适合学习】) 40cm three-color infinite [dimming and color-changing]](40CM三色无极【调光调色】) 40cm three-speed natural light [adjustable brightness]](40CM三档自然光【可调亮度】) 40cm three-gear white light [adjustable brightness]](40CM三档白光【可调亮度】) 40cm single-level natural light [dormitory learning]](40CM单档自然光【宿舍学习】) 40cm single-level white light [suitable for learning]](40CM单档白光【适合学习】) 30cm three-speed natural light [adjustable brightness]](30CM三档自然光【可调亮度】) 30cm three-gear white light [adjustable brightness]](30CM三档白光【可调亮度】) 30cm single-level natural light [general brightness]](30CM单档自然光【一般亮度】) 30cm single-level white light [general brightness]](30CM单档白光【一般亮度】) 30cm no switch [dark]](30CM无开关【较暗】)