we can supply colors light calendar Here are brief introduction of our company: Shenzhen YiXin Electronics Co., Ltd. Is a research and develop, produce, sell and OEM promotion gift, electronic gift, advertisement gifts as an organic whole enterprise.The headquarters will be located in Hong Kong,That is a Yixin Industry International Group's subordinate enterprise, will use the mainland of China produce product low cost the comprehensive superiority。 colors light, LCD clock, calendar and thermometer funtion.it used 3*AAA batteries,that is a good choice of promotion gift!welcome to visit our website and contact us and want sample!