Best Electronic Altimeters

Suunto Core Sports Watch, Classic Outdoor Adventure Watch with Altimeter, Barometer & Compass, Dual-time Sunrise & Sunset Display, Temperature & Storm Alarm for Hiking, Mountain Use

Garmin eTrex 32x, Outdoor Handheld GPS Unit, Altimeter and Compass Sensors, Button Operated, Preloaded Maps, 2.2" Sunlight Readable Colour Display

Garmin fēnix 6S, Smaller Multisport GPS Smartwatch, Advanced Health and Training Features, Ultratough Design Features, Up to 9 days battery life, Black

Pre-Soldered GY-BME280-3.3 High Precision Altimeter Atmospheric Pressure, Temperature, and Humidity BME280 Sensor Module for Raspberry Pi, Arduino, and Other MicroControllers

Garmin GPSMAP 65s, Button-operated Handheld with Altimeter and Compass, Expanded Satellite Support and Multi-band Technology, 2.6" Color Display

NORTH EDGE APACHE-46 Digital Sports Watches for Men Military Watches with Compass Temperature Steps Tracker Sport Tactical Survival Watches, APACHE-46,

Adafruit BMP388 - Precision Barometric Pressure and Altimeter

Smart Watch for Men - Sports Fitness Waterproof Watches Bluetooth Calls (Answer/Dial) GPS Activity Health Tracker Heart Rate Blood Oxygen Monitors 1.82" Tactical Military Smartwatch for Android IOS

HXHH Outdoor Sports Smart Watch, Silicone Tactical Watch With Altimeter, Barometer, Compass And Thermometer, 50M Waterproof Military Watch, Multifunctional Fitness Tracker,Black

ENOMIR Smart Watch (Answer/Make Call), Alexa Built-in, 1.8'' Fitness Watch with Heart Rate SpO2 Sleep Monitor, 100 Sports Modes, 5ATM Waterproof, Step Counter and Smartwatches for iOS Android Phones