Abstract: A snorkel assembly includes a mouthpiece and a tube secured thereto. The tube extends between a mouthpiece end and a distal end. A purge valve is disposed adjacent the mouthpiece and the mouthpiece end of the tube. The purge valve allows water and gas to exit the snorkel assembly while preventing water and gas from entering therethrough. The snorkel assembly also includes a check valve secured to the distal end. The check valve allows water and gas to enter the snorkel assembly while preventing water and gas from exiting therethrough.

Abstract: A biometrics device measures a biometric quantity of a body of a user while the user is in motion. The biometric device includes a sensor to measure the biometric quantity of the user and creates a sensed biometric signal. A coupling device couples the sensor to the body of the user. An emitter is electrically connected to the sensor, receives the sensed biometric signal, and emits an output signal to be received by the user such that the user can understand the biometric quantity as the user continues the motion.