This sleek new antenna design improves upon intercom stability and even secures the intercom distance while updates to the hardware allow for an even more robust general performance updates. Specifications: Talk time: 13 hours. Operating temperature: -10°C – 55°C (14°F – 131°F). Dimensions: Main module: 98 mm x 56. 2 mm x 31. 5 mm (3. 9″ x 2. 1″ x 1. 2″). Speaker: driver unit 40 mm – thickness 6. 5 mm. Boom microphone: length 190 mm. Wire between speakers: length 555 mm. Weight: Module: 61.