Ocean Technology XT-100 Buddy Phone 900408-021 030571

Mfg Part #: 900408-021
  • Specifically designed as an acoustic underwater telephone for the Sport Diver
  • Utilizes new super mic which is noise cancelling and fully floodable to any depth
  • Your second stage regulator easily installs to the HM-2 mouth mask
  • Unique push-to-talk system
  • Uses ultrasonic upper single sideband for transmission
  • Provides moderate range and clear diver-to-diver voice communication
  • Powered by one 9-volt battery (not included - see below to order)
  • NOMINAL RANGE: 50 to 500 meters depending conditions
  • OPERATING DEPTH: 130 Feet of Sea Water
  • BATTERY TYPE: 9 volt
  • BATTERY LIFE: 8 to 10 hours

Customer Reviews for Ocean Technology XT-100 Buddy Phone:

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Average Customer Review: based on 1 reviews.

Rating: lots of fun
Reviewer: Monther M. Jamal  -  View all my reviews
its really fun when you use the buddy phone with your friends and students. i really enjoyed it alot. i recommend it for every diver (Profesional and Beginner). enjoy your jokes and everything while underwater.

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Questions and Answers for Ocean Technology XT-100 Buddy Phone:

  • Mike:

    Is this compatible with the MkII buddy Phone (the D2) or not? i.e. the one that comes with the OTS Guardian FFM from this site. Thanks, Mike.

    Arthur  (Certified Scuba Instructor at Scuba.com):

    Good morning, yes it is. They operate on the same frequency.


    Hello, i need to know if i would can use a Ocean Technology XT-100 Buddy Phone with a Ocean Reef M100 Portable Surface Transceiver Unit. Are compatible ? works in the same frequency?? Thanks.

    Darrick  (Certified Scuba Instructor at Scuba.com):

    Hello Antonio, no they would not work together. They are different manufactures and not compatible.

XT-100 Buddy Phone®

The patented XT-100-H Buddy Phone® transceiver has been specifically designed as an acoustic underwater telephone for the Sport Diver. It uses ultrasonic upper single side band for transmission. The diver utilizes his own face mask and 2nd stage regulator. The XT-100-H Buddy Phone® comes complete with a HM-2 black silicone mouth mask.

Your second stage regulator easily installs to the HM-2 mouth mask. The HM-2 mouth mask has a patented Hot Mic® studio quality, water proof microphone installed, a comfortable head strap and a unique push-to-talk system. When the diver enters the water, the XT-100-H powers up and cycles to the receive mode - ready to receive a message.

When the diver wants to transmit, they simply depress the PTT button located on the HM-2 and talk. All divers and/or surface stations within range and on the same frequency will hear the message. The XT-100-H look identical to the XT-100. However, the XT-100 comes with a ceramic microphone, not a Hot Mic.

Buddy Phone Specifications
Nominal Range: 50 to 500 meters depending on sea conditions and noise levels
Refer. Frequency: 32.768 kHz upper single sideband
Audio Bandwidth: 300 Hz to 3,000 Hz
Auto. Gain Control: Greater than 80 dB
Earphone: Ceramic with dynamic depth compensation
Microphone: Dynamic specially designed to be noise canceling & waterproof
Transducer: Ceramic cylinder
Acoustic Power 0.5W
Battery Type: Alkaline 9-volt type
Operating Depth: 130 FSW
Weight in Air: 8.1 oz. (229.64 grams)


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