Ultrasonic Portable Mini Anemometer
Ultrasonic Portable Mini Anemometer
Ultrasonic Portable Mini Anemometer
Ultrasonic Portable Mini Anemometer
Ultrasonic Portable Mini Anemometer
Ultrasonic Portable Mini Anemometer Ultrasonic Portable Mini Anemometer Ultrasonic Portable Mini Anemometer Ultrasonic Portable Mini Anemometer Ultrasonic Portable Mini Anemometer

Ultrasonic Portable Mini Anemometer

Catalogue Code: 220678
£244.95 In Stock Online
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  • Get it on Wednesday, 29th May if ordered within the next --:--:-- and select Next Day Delivery *UK Mainland Only
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Mini Adjustable Body
Mini Adjustable Body £39.95 Save £3.19 RRP £43.14
1/4” Camera Plate
1/4” Camera Plate £13.95 Save £1.77 RRP £15.72

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Calypso Ultrasonic Portable Mini Anemometer

The Calypso Mini Portable wind speed and wind direction meter (anemometer) is a battery powered, reliable and extremely accurate wind speed and direction device. Just 43mm in diameter the Ultrasonic Portable Mini is a pocket-sized complete wind instrument.

Built using the latest solid-state ultrasonic technology the Calypso Mini delivers many advantages over conventional cup and vane anemometers which have moving parts such as ball bearings that can bind with age or get easily damaged when hit by birds or fouled by ropes.

The Ultrasonic Portable Mini is a wind meter that measures both wind speed (air velocity) and wind direction. Bluetooth Version: 5.1 allows data to be viewed by many ‘free to market’ Apps within 30m (line of sight) of the sensor. Data can be saved and downloaded in Excel or .CSV format or mapped for later analysis and reporting.

The Calypso Mini sensor has an industry standard female thread (1/4") and is compatible with any tripod or monopod allowing it to be easily mounted and left for remote wind monitoring. In addition, when used with the Phone Mount (sold separately) you can attach the sensor to your phone via the headphone socket for in-hand wind speed and direction monitoring.

With 150 hours of battery life during operation it can happily gather wind data for over 4 full days continuously. Recharging is simple using a wireless charge pad connected via USB to any power source, it will be fully charged from empty in 4 hours.

The Calypso Mini’s size makes it an ideal stand-alone wind meter, perfect for dinghies, sports keelboats, yacht race management, mark laying and coaching.

Data can be converted into an NMEA0183 or NMEA2000 signal by connecting the sensor wirelessly via Bluetooth to the Calypso NMEA Gateway, allowing data transfer to a yachts NMEA0183 or NMEA2000 chart plotter.


  • Compatible with a wide range of iOS and Android Apps including Calypso Anemotracker, iRegatta, eStela, Sail Racer, EDO Sailing Instruments, Sailgrib, qtVLm Navigation and Routing, Tactiqs and more.
  • Bluetooth 5.1 connectivity, 30m line of sight.
  • NMEA0183 & NMEA2000 signal conversion via Calypso NMEA Gateway.
  • Durable & IPX8 waterproof rated.
  • Wind speed and direction sensor.
  • Solid-state ultrasonic sensor, maintenance free, no moving parts.
  • Varied and easy mounting options, universal standard female thread (1/4").
  • 150 hours battery life, rechargeable.
  • Wireless battery charging via USB connected charge pad, included.
  • 4 hour charging time from empty to full.
  • Special mention at the Dame Design Awards 2021.

App Functionality

  • App functionality varies with selected App
  • Apparent wind speed and direction.
  • Real wind speed and direction (if used on boat).
  • Tracking of your wind data and export to excel or Google Earth.
  • Data graphing functions.
  • Velocity Made Good calculations.
  • Configuration of units of measurement: m/s, km/h, knots.
  • Wind direction adjustable damping.
  • Threshold alarm, direction offset, map mode, etc...
  • Sensor firmware upgrade using the Calypso Upgrader App


  • Power: Internal battery (150 hours autonomy)
  • Charging: Wireless charging QI
  • Wind speed range: 1-25m/s
  • Wind speed accuracy: 0.3m/s at 10 m/s
  • Wind direction range: 0 -359deg
  • Wind accuracy: +/- 1%
  • Sample rate 1 Hz
  • Waterproof: IPX8
  • Weight: 78g
  • Dimensions (mm): 43 diameter x 47 height
  • Mounting thread: ¼”

In the Box

  • Ultrasonic Portable Mini wind meter
  • Charging pad
  • USB cable

Stock Availability

Stock can move quickly, so this is just a suggestion of current levels, please phone the shop to confirm.

The ship to store service is based on Head Office sending stock to a branch.

If you wish to call & collect stock, please do so over the phone using the number provided.

Store Availability Telephone
Cardiff 02920 220929
Chichester 01243 773788
Deacons 02380 402182
Lymington 01590 673698
Plymouth 01752 548301
Poole 01202 723311
Port Hamble 02380 454858
Southampton Not currently in stock 02380 632 725
Gloucestershire (Distribution Hub) 0345 130 0710

- Good Availability

- Low Availability

- One item left

Delivery & Returns

Royal Mail Service Update: Please be aware when choosing Royal Mail as your preferred delivery method, your delivery time may be impacted by ongoing strikes and may take up to 20 working days. If your order is time critical we suggest choosing a courier or Next Day Service


Our Mail Order team ship chandlery, yacht parts and sailing clothing around the world. We use the best value couriers available, and we will endeavour to get your products to you as quickly and as cost effectively as possible.

International Orders: Due to delays we have had to suspend our international delivery options. 

UK Standard Delivery

  • UK Mainland 0 - 2Kg (small jiffy) £3.95 Royal Mail Service. Despatch within 3- 5 working days, delivery in 7-10 working days for orders under £50.00
  • UK Mainland up to 25Kg £5.95 Courier service with signature. Despatch within 3- 5 working days, delivery in 7-10 working days
  • UK Mainland 25Kg+ Price on request
  • UK Mainland Next Day 0 - 25Kg £9.95 Courier service with signature, orders must be placed before midday
  • Northern Ireland, Highlands & Islands 0 - 2Kg (small jiffy) £3.95 Royal Mail Service. Despatch within 3- 5 working days, delivery in 5-7 working days for orders under £50.00
  • Northern Ireland, Highlands & Islands 1 - 25Kg £10.95 Courier service with signature. Despatch within 3- 5 working days, delivery in 7-10 working days
  • Northern Ireland, Highlands & Islands 25Kg+ Price on request
  • Channel Islands 0 - 2Kg (small jiffy) £5.95 Royal Mail Service Despatch within 3- 5 working days, delivery in 5-7 working days for orders under £50.00
  • Channel Islands 1 - 25Kg £13.50 Courier service with signature. Despatch within 3- 5 working days, delivery in 5-7 working days
  • Channel Islands 25Kg+ Price on request

UK Exceptional Delivery

  • UK Mainland; Antifoul & paints £5.95
  • UK Mainland; Inflatable dinghy £10.00
  • UK Mainland; Liferafts £17.50
  • UK Mainland; Flares £49.95
  • Northern Ireland, Highlands & Islands; Antifoul & paints £9.95
  • Northern Ireland, Highlands & Islands; Inflatable dinghy price on request
  • Northern Ireland, Highlands & Islands; Liferafts price on request
  • Northern Ireland, Highlands & Islands; Flares not available to ship at this time
  • Channel Islands; Antifoul & paints £13.50
  • Channel Islands; Inflatable dinghy price on request Channel Islands; Flares not available to ship at this time

For further delivery information click here.


Standard Returns

If you are not entirely happy with your purchase, we will exchange or refund your goods in full, provided that the items are returned within 14 days of receipt.*

Please check the condition of goods on arrival - we are unable to accept goods damaged during shipping after 14 days.

Returned goods must be packaged securely, with all original packaging undamaged and in a saleable condition i.e. shoe boxes must be in the same condition as when received.

Goods must be unused and security seals intact.*

If you would like to return goods because they were ordered incorrectly or if clothing does not fit, return postage will be at your expense. If you would like us to replace the goods with another size or colour, we will charge carriage on the replacement.

Please be aware that some navigational and safety products may be dated, and as such a full refund may in some cases not be possible. If you are purchasing dated navigational charts we suggest you contact us for more information.

Faulty Goods

If you receive your goods and believe them to be faulty, please contact us straight away with a brief description of the problem. If we require you to return the product for a replacement, we will send you a pre-paid Royal Mail label for delivery back to us. Unfortuantely we cannot send the courier back to collect the items.

Returning goods to Force 4 is easy!

  1. Please contact us by ringing 0345 1300 710 or email on [email protected]. This way we'll be able to determine whether you would like to return the product for a refund or whether you'd like to exchange the product. We are unable to process the return of faulty goods that we're not expecting.
  2. We'll then give you a returns number. This returns number will need to be clearly marked on the outside of your parcel so it can be identified on arrival. Please note, failure to mark a returns reference number on the outside of your parcel may result in a delay in processing your return.
  3. Don't forget your proof of postage, just in case!
  4. Once we receive the item we'll be able to proceed with a refund or an exchange.

*this excludes faulty goods with manufacturers defects. If goods are found to be faulty during use, after the returns period, please just give us a ring on 0345 1300 710 and we'll be happy to help.


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Men's Size Guide

  To Fit Height To Fit Chest
X SMALL 5'2" - 5'4" 34 - 36"
SMALL 5'5" - 5'7" 36 - 38"
MEDIUM 5'7" - 5'10" 38 - 40"
LARGE 5'11" - 6'1" 41 - 43"
X LARGE 6'1" - 6'3" 44 - 46"
XX LARGE 6'3" - 6'5" 46 - 48"


Shoe Sizes

3.5 36   5.5
4 37   6
4.5 37.5   6.5
5 38 5.5 7
5.5 38.5 6 7.5
6 39.5 6.5 8
6.5 40 7 8.5
7 40.5 7.5 9
7.5 41.5 8 9.5
8 42 8.5 10
8.5 42.5 9  
9 43 9.5  
9.5 44 10  
10 44.5 10.5  
10.5 45 11  
11 45.5 11.5  
11.5 46.5 12  
12 47 12.5  
12.5 47.5 13  
13 48 13.5  
14 50 14.5  
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