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Descent T1 Specifications
Battery 3 V CR123A lithium
Battery life Up to 100 hr.
Thread type
7
/
16
in. (20 UNF)
Normal operating temperature From -20 to 60°C (from -4 to 140°F)
Underwater operating temperature From 0 to 40°C (from 32 to 104°F)
Storage temperature From -30 to 70°C (from -22 to 158°F)
Wireless frequency 2.4 GHz @ 0 dBm
Surface transmission range (ANT wireless tech
nology)
Up to 10 m (33 ft.)
Underwater transmission range (sonar) Up to 10 m (33 ft.)
Water rating 11 ATM
1
Pressure rating 300 bar (4351 psi)
Inspection interval
Inspect parts before each use for damage. Replace
parts as needed.
2
Device Maintenance
Device Care
NOTICE
Do not use a sharp object to clean the device.
Avoid chemical cleaners, solvents, and insect repellents that can damage plastic components and finishes.
Thoroughly rinse the device with fresh water after exposure to chlorine, salt water, sunscreen, cosmetics,
alcohol, or other harsh chemicals. Prolonged exposure to these substances can damage the case.
Do not wash the device under high pressure, because jets of water or air may cause damage to the depth
sensor or barometer.
Avoid extreme shock and harsh treatment, because it can degrade the life of the product.
Do not store the device where prolonged exposure to extreme temperatures can occur, because it can cause
permanent damage.
Discontinue use if the device is damaged or if it is stored at a temperature outside the specified storage
temperature range.
1
The device withstands pressure equivalent to a depth of 110 m. For more information, go to
garmin.com/waterrating.
2
Aside from normal wear and tear, performance is not affected by aging.
138 Device Information
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