Dial features bold white numerals on black face for easy reading. Self-adjusting D-Ring Adcuff™ for Home™ for one-handed application. Size Guide™ marking system ensures optimal accuracy. Latex-free. Auto-deflation valve. Accurate to +/-3mmHg of reading. Attached nurse scope. Zippered carrying case and operating instructions. Assembled, inspected, and packaged in the U.S.A.