Pocket Tone Dialer (430-0145) Specifications Faxback Doc. # 15952 Power Requirement:.................................3 AAA Alkaline Batteries Dial Method:......................Standard Dual-Tone Multi Frequency (DTMF) Telephone-Connection Type:.........................................Acoustic Dimensions:............................3 13/16 x 2 1/8 x 13/16 Inches (HWD) Weight:..............................................................2.5 oz (TE/all-07/18/95)