L&B Optima II Audible Skydiving Altimeter LED Option:With LED Socket Helps compress the pack job

Helps compress the pack job evenly

Why Choose the LB Protrack 3

but it is not lazy either

Choose custom if you need a specific colour layout

Custom slider and separation-channel colours

L&B Optima II Audible Skydiving Altimeter LED Option:With LED Socket Helps compress the pack jobLED socket option Select With LED Socket if you want the Optima II prepared for LBs external visual LED warning light. The LED socket version gives the same audible altitude awareness features, plus a visual warning output for jumpers who cannot reliably hear an audible in every situation, including high speed flight, noisy helmets, hearing limitations or disciplines where extra visual altitude cues are useful. The LED socket is an integrated product