Freefall Data Systems
AO(N2)
Alti-2
Larsen & Brusgaard
SonoAlti
Brillant Pebbles
Atlas
Optima II
MSRP
$279.00
$119.99
$399.00
$279.00
dimensions
61 x 39 x 12 mm
45 x 35 x 14 mm
62 x 43 x 12 mm
52 x 40 x 12 mm
volume
28.5 cm3
22.1 cm3
32.0 cm3
25.0 cm3
weight
31 g
21 g
40 g
26 g
material
high-impact plastic
high-impact plastic
ruggedized aluminium
high-impact plastic
operating altitude
0–30,000 ft
0–30,000 ft
0–20,000 ft
0–20,000 ft
battery life
5 months / 500 jumps
2 months
2 months / 200 jumps
18 months / 500 jumps
warranty
2 years
2 years
2 years
1 year
# of possible alarms
24
20
8
10
# of different sounds
63
9
7
6
doubles as wrist-mounted alti
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rechargeable
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always on
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waterproof
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app for setting
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iOS / Android Bluetooth® app
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unlimited user presets
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can be set during ascent
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LCD screen
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integrated clock
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logs jumps, canopy and freefall time
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jump graphing (speed and altitude)
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wingsuit and swoop modes
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DZ elevation offset possible
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vertical descent speed tracking
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low battery warning
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adjustable loudness
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adjustable pitch
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guide tones possible
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