Walkie Talkie transmitter/receiver, used on the Mount Everest expedition, c.1953 Walkie Talkie transmitter/receiver, used on the Mount Everest expedition, c.1953
Headpiece and cable, from Walkie Talkie transmitter/receiver, used on the Mount Everest expedition, c.1953 Walkie Talkie transmitter/receiver, used on the Mount Everest expedition, c.1953