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GO BIG!The QUATTRO™ audible altimeter is the latest in micro technology and features the most advanced programming for accurately measuring freefall & canopy descent rates. The QUATTRO™ allows the skydiver four sets of warning altitudes for high speed and three for low speed flight. This provide..

VISO II- OPTIMA II- QUATTRO- SOLO II replacement battery cover & water seal. Includes replacement screw...

Easy and secure way to get your Optima / Quatro / Solo attached to your OPS-Core helmet...