Features:

Altimeter: -700~9000m / -2300~29500ft
Digital barometer
Weather forecast
Digital thermometer (C or F user option)
Digital clock (2 time zones with 12 / 24 hours, hour, minute and second)
Calendar with year, month and date function
Backlight LCD
Leveling bubble for increased accuracy
Battery: 2 x AAA battery(included)
Imprint area: 0.98 x 0.39in(25 x 10mm)
Product size: 1.97 x 3.54 x 0.71in(50 x 90 x 18mm)
Net weight: 0.11lb / 48g

Package includes:
1 x Altimeter
1 x Usage instructions
2 x AAA Batteries
1 x Rope