An expandable drill bit for use with earth drilling equipment. In one illustrative example, the mobile station causes GPS navigational-type data to be regularly or periodically received and stored in memory prior to the voice call. When clustered, the radiated emissions will not add. 2 \u03bcm in combination and blending titanium oxide and zinc oxide at a mass ratio of 1:4 to 2:3, wherein SPF is maintained as compared with the case where the mass ratio of titanium oxide to zinc oxide is 1:0, and when applied to a thickness of 10 \u03bcm, the whiteness W value measured using the CIE color specification system is 20 or less.