Designed and tested to withstand 500°F for more than 5 min, OTTO 500 features high-temperature design for its case, cable, and strain relief. This high-temperature, fire-rated speaker microphone is also immersion rated. It is fully sealed to IP68 and has been tested in 1 m of water for 31 min. Standard equipment includes 500°F FIRE-TUFF® cable from Whitney Blake as well as one clip that ensures secure attachment to gear.