Philips Digitale Voice Tracer 7600, 4 h, 500 - 3.500 Hz, 8 MB, LCD, 1.76 oz (50 g), 4.33 x 1.3 x 0.748" (110 x 33 x 19 mm) Philips Digitale Voice Tracer 7600. Maximum recording time: 4 h, Frequency range: 500 - 3.500 Hz. Internal memory: 8 MB. Display type: LCD. Weight: 1.76 oz (50 g). Dimensions (WxDxH): 4.33 x 1.3 x 0.748" (110 x 33 x 19 mm), Battery type: AAA