Gillette

(G) - Get Report

plans to spend $100 million on advertising and marketing for its

Duracell

division this year in an attempt to boost sales at the batteries maker.

The spending level would be a 40% increase from last year, according to published reports. Representatives of Gillette and Duracell couldn't be reached for comment.

Shares of Gillette, which is based in Boston, fell 93 cents, or 2.9%, to $31.15 in recent

New York Stock Exchange

trading.