audio-visual altimeter and data logger (US Patent No. 10,267,630 B2) includes charging cable & stickers one-year subscription to FDS Logbook Key Features Has all capabilities of SonoAlti 2 Rugged anodized aluminum case Logs your jumps (altitude, speed, and temperature) for syncing to FDS Logbook Free Bluetooth® iOS/Android app for setting the altimeter and syncing logged data to FDS Logbook Firmware updates as easy as dragging a file onto a USB drive Store up to five presets and select them via button press on the altimeter Store unlimited alarms and/or alerts in each preset 32 different alarm sounds 33 different light alerts and effects (US Patent No. 10,267,630 B2) Always on Remembers your settings and data when the battery runs out Adjusts automatically to local elevation Freefall threshold can be customized, and freefall alarms and alerts can be disabled below a certain altitude for swoopers and wingsuiters Speaker volume can be adjusted for each individual type of alarm (i.e. ascent, freefall, and canopy) LED brightness can be adjusted Landing zone altitude adjustments can be made in each preset for those landing at a different altitude than takeoff Tested to function accurately up to 30,000 feet Control unit easily fits in an audible altimeter pocket in your helmet Different types of lights can be plugged into the same control unit Rechargeable lithium polymer battery (USB charging cable included) Long battery life (approximately 200 jumps or 2 months) Low battery warning alarm and light at 1,000 feet Check battery status by holding down both buttons