"In a world of expanding boundaries and global communication, e-mail and mobile phones are a way of life. With a greater desire for adventure the world over, instant communication is an essential part of travel safety. The new TalkAbout T5422 is compact, durable, light and should be part of your communications arsenal. Communication with your partner can be over a distance of 3km (depending on terrain and climate) by means of press and talk simplicity. A new sleeker, yet solid design features interchangeable fascias and is built from high impact polycarbonate. The functions are clear and easy to use. This shock and water-resistant unit is the No 1 choice for alpine communication."
Answer - -20 to + 55°Chttp://www.ellis-brigham.com/cgi-bin/competition.cgi