Open Box Dive Alert SMB Surface Marker Buoy - Orange Used Rashguards Optical heart rate technology gauges

Optical heart rate technology gauges activity intensity as well as heart rate variability to calculate your stress level

Wide panoramic anti-fog screen

such as trimix computers

Optional deep stop with countdown timer

6 hrs (level II)

Open Box Dive Alert SMB Surface Marker Buoy - Orange Used Rashguards Optical heart rate technology gaugesPlease note this is an OPEN BOX offer. The item will be in new condition, but may not have original packaging. PRODUCT DESCRIPTION The DiveAlert SMB (surface marker buoy) features Closed Circuit (one way valve) construction, which prevents air spill at the surface. Inflate on the surface to attract visual attention or redundant flotation. Inflate at depth to send up as a surface marker. Solas reflective tape (Coast Guard approved) across the top of