- 	 Samsung Convoy U640 Phone for Verizon Wireless Network with No Contract (Gray) Rugged
The Samsung Convoy SCH-U640 is a durable push-to-talk phone for Verizon. This model adheres to military specification 810F for shock, dust, vibration, temperature, humidity, fog etc. The Convoy also comes equipped with GPS, Bluetooth compatibility, MMS, email client, music player, 2+ megapixel camera, voice dialing, and quality speakerphone.