Nobody plans on getting lost, but with the Body Glove Lifeline GPS Rescue Radio, you'll be prepared in case of such an emergency. Simple controls include color-coded buttons for chatting with a buddy, calling for help on the International Hail and Distress channel, or activating a strobe and sending alert messages with GPS position. The Li-Ion battery operated radio has a 1-watt average operating RF power. Lifeline GPS Rescue radio has an easy to read LCD screen. Designed to float. Depth rated to 425 feet. 50-ohm antenna impedance. Durable polycarbonate construction with stainless steel components. Weighs 9.88 oz. 2.6"W x 5.7"H x 1.8"D.