HP 636925-001 - Internal speaker assembly - Size40mm (1.5-in) X 28.5mm (1.1-in), 4ohms at 2 Watts Retail
HP 337249-001 - Chassis speaker assembly - Includes a 40mm (1.6in) by 70mm (2.7in) speaker with attached 35.6cm (14in) cable and the speaker mounti Retail