OTS Buddy Phone Through-Water Transceivers (1/2 Watt Output Power)

OTS Buddy Phone Through-Water Transceivers (1/2 Watt Output Power)

Name: OTS Buddy Phone Through-Water Transceivers (1/2 Watt Output Power)
Brand: OTS - Ocean Technology Systems
SKU: 900463-000
Availability: InStock

$1,835.00 inc. GST

The OTS Buddy Phone D2 Guardian is a 0.5 W, two-channel through-water voice transceiver for a compatible Guardian full-face mask. Push-to-talk and voice-menu controls support communication with compatible OTS equipment. Mask and 9 V battery are not included.

Colour: Black

SKU: 900463-000

4 in stock (can be backordered)

OTS Buddy Phone Through-Water Transceivers (1/2 Watt Output Power)

The D2 Guardian Buddy Phone adds underwater voice communication to a compatible OTS Guardian mask. Match the channel and sideband with the other divers’ or surface station’s equipment.

OTS part 900463-000.
0.5 W output and two channels.
Push-to-talk with voice-menu settings for volume, channel and continuous transmission.
Channel 1: 32.768 kHz USB; Channel 4: 31.250 kHz LSB.
Listed depth rating: 130 fsw / approximately 40 m.
Uses one 9 V alkaline battery, not included.

The listed 50–500 m range depends on water conditions, background noise and equipment positioning. Guardian mask is separate.

Technical Specs

OTS Buddy Phone Through-Water Transceivers (1/2 Watt Output Power) technical specifications
Brand	OTS - Ocean Technology Systems
Main model / configuration	OTS Buddy Phone Through-Water Transceivers (1/2 Watt Output Power)
Product type	Accessory
Battery	Alkaline 9V. Batteries not included
Depth rating	130 feet in sea water (fsw)

Additional specifications

Nominal Range	50 to 500 m depending on sea conditions & noise levels.
Transmission Type	Ultrasound using upper single sideband (USB)
Transmit Output Power	0.5 watts PEP
Standard Frequency (PEP)	Recall & tone: Freq. A (Channel 1): 32.768 kHz USB Freq. B (Channel 4): 31.250 kHz
Audio Bandwidth	300 to 3,000 Hz
Automatic Gain Control	Greater than 80 dB
Earphone	Ceramic
Microphone	High Quality Microphone
Transducer	Ceramic cylinder
Weight in Air	8.1 oz

Stay connected underwater with the OTS Buddy Phone Through-Water Transceivers, a compact and reliable communication system designed for recreational divers, instructors, safety teams, and professional dive operations. Operating at 1/2 watt output power, the Buddy Phone allows clear voice communication between divers and surface support, improving safety, coordination, and overall dive enjoyment.
1/2 Watt ultrasonic through-water voice communication
Compatible with various OTS communication systems and full-face masks

We dispatch orders five days a week, usually within 1–3 days. Standard mainland Australian shipping is $20. Click & Collect from our Hallam store is free once your order is ready.

Large or bulky gear: additional freight charges apply on top of standard shipping: large dive bags $30; long freediving fins $15; long spearguns $20. Scuba tank freight is shown at checkout.
Rural, remote & offshore: rural means anywhere outside metropolitan areas. Carrier availability and additional charges may apply, including for island and territory destinations. Our team will contact you if an extra freight quote is needed.

The available delivery rate for your order is shown at checkout.

Read our full shipping and delivery information →

We offer a 30-day exchange on most unused products within Australia when they are in saleable condition with their original packaging and accessories. Please contact us with your order number before returning an item. Change-of-mind refunds are not offered; this does not limit your rights for faulty products under Australian Consumer Law.

Read our full returns and exchanges policy →

FREE CLICK & COLLECT
Usually ready same day*

Select local pickup at checkout. We will email you when your order is ready. Please wait for your ready-to-collect confirmation before visiting, then bring your confirmation email and photo ID.

Collect from our Hallam store
Factory 4 / 56–60 Hallam South Rd
Hallam VIC 3803

*For items in stock at our Hallam store during opening hours, subject to order processing. Available-to-order and special-order items take longer. Collection is unavailable while the store is closed.

View collection details and opening hours →

Can I collect my order from the store?

Yes. Choose free local pickup at checkout and wait for your ready-to-collect email before visiting our Hallam store. Bring your confirmation and photo ID. See Click & Collect details.

How do I choose the right size?

Use the product's size chart where available and compare your measurements with the guide for that brand. Sizing varies between brands and products. If you are unsure, contact our team before ordering and we can help you choose.

How do I check availability?

Select your required options, such as colour and size, to see availability for that variation. If an item is marked “Available to order”, check the estimated dispatch information. Please contact us before ordering if you need gear by a particular date.

When will my order be dispatched?

Orders are usually dispatched within 1–3 days, subject to stock availability. Available-to-order and special-order products may take longer. Delivery time is separate from dispatch time and depends on your location and the carrier. Read our shipping information.

Can I exchange an item if it does not fit?

We offer a 30-day exchange policy on most unused products within Australia, subject to eligibility. Contact us with your order number before returning an item. Read the exchange conditions and next steps.

Can you help me choose the right gear?

Yes. Call 03 9702 3694 during store hours or email [email protected]. Tell us which product you are considering and how you plan to use it.

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