Description Questions & Answers Unbeatable accuracy - clinically tested Drop tested durable and moisture proof Simple one button operation 7088 - Suitable for finger thickness .37" - .86" (9.5mm - 21.9mm) Questions & Answers Continue Chat with an Expert 115 characters remaining Email Address I agree to the Terms and Conditions and Privacy Policy Submit {timestamp} {title} See answers {details} See more » {follow} {timestamp} {type} {text} See full answer » {name} {timestamp} {text} See full comment » See more answers