Casio ProTrek PRG-80T-7VDR watch
This digital Quartz watch is solar-powered, so you won't run out of batteries. It has electro-luminescent backlight and a battery power indicator. You can switch off auto illumination as this takes its toll on battery life (power saving mode). It can store historical to-date altitude data and display highest altitude, lowest altitude, total ascent and total decent for tracking your climbing history.
Further features are:
- sensors for reading temperature (thermometer) altitude (altimeter), pressure (barometer) and direction (compass)
- low-temperature and water resistant (100M)
- 1/100-second stopwatch
- countdown timer
- alarms (daily alarms, hourly time signal)
- auto-calendar, 12/24-hour format
- dimensions: 62.3 x 52.2 x 14.4mm (case)
- weight: 117gm
Garmin Forerunner 205
Features:
- high-sensitivity SiRFstar III GPS receiver
- USB connectivity
- waterproof (submersible in one meter of water for up to 30 mins)
- dimensions: 53.3 x 17.8 x 68.6 mm
- display size: 33 mm width x 20.3 mm height
- weight: 77 g
For more details:
http://www.amazon.com/gp/product/B000CSQJ8C/