Glider communicator

From The Stargate Omnipedia

Glidercommunicator2.jpg

Two-way communication device which attaches to the side of the face. Glider communicators are not commonly used, but serve as an optional comm attachment to squadron leaders and their co-pilots.

KEY EPISODES

The Serpent's Lair - Following the destruction of Apophis and Klorel's motherships, death gliders carrying O'Neill, Bra'tac, Carter and Teal'c communicate with one another via glider communicators prior to the Space Shuttle Endeavor's rendezvous.
The Serpent's Venom - After escaping Heru'ur's destroyed mothership, Rak'nor and Teal'c use glider communicators to speak with O'Neill aboard a Tok'ra Teltak.
Exodus - O'Neill and Teal'c apply glider communicators after taking off in one of Cronus' death gliders.