案情简介2003年12月15日,某公司销售经理李先生到一商场购买手机,在商场里,销售人员向其推荐一款正在做促销的新手机,促销内容为:凡购买本款手机者赠送手机电池一块。李先生觉得自己经常出差,多一块电池对工作很有帮助,随即购买了此款手机,并获得了赠送的手机电池。商场销售人员给李先生签发了收款单据并提供了齐全的产品质量保证单,但并未对赠送的手机电池质量作出任何说明。 December 15, 2003, Lee, a company sales manager to a mall to buy mobile phones, in the mall, the sales staff to recommend a new mobile phone is doing the promotion, promotional content is: Where the purchase of this phone is presented Cell phone battery. Mr. Lee felt that he often travel, more than a battery of work is very helpful, then bought this phone, and received a gift of mobile phone battery. Sales staff to the salesman Lee issued payment receipts and provide a full range of product quality warranty, but did not give any indication of the quality of mobile phone batteries.