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Experience cycling as it should be with the world's most intuitive yet advanced cycling computer ever made.

Experience cycling as it should be with the world's most intuitive yet advanced cycling computer ever made.

Hammerhead

Hammerhead Karoo 3 GPS Bike Computer

£410.00 £450.00 9% off
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Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
Earn Rewards
When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

Hassle free returns

Obviously we want you to be happy with every product you purchase from us, whether online or in store. Please do not remove labels from products or dispose of packaging while you are making up your mind as this may affect your ability to return an item. If you choose to return an item it must reach us in original unused condition with all labels attached and any packaging that may have formed part of the item i.e. boxed goods. At all times your statutory rights are protected.

MAKING A RETURN

In the event that you are not satisfied or have changed your mind, you may return any item or items within 14 days of the dispatch date and, following inspection of the product, we will refund you for the cost of the item minus the outgoing delivery charge (minimum charge £7.00) via the original payment method used. Please note that the cost of return is not the responsibility of Rule #65 Ltd. We reserve the right not to accept ‘change of mind’ returns outside of this period. Goods may also be returned in person to our store.

There are some exclusions to our 14 day returns policy, which are detailed below (unless faulty or not as described):

  • Nutritional products or food items must be authorised for return and the best before date must be within 28 days
  • Any customised items such as wheel builds cannot be returned or personalised items
  • GPS systems such as sports watches or cycle computers can only be returned if unregistered
  • For hygiene reasons, any intimate garments such as bibshorts & tights, underwear and swimsuits can only be returned if the items are unworn (and any protective packaging remains)
  • Gift vouchers
  • Products received over 14 days ago
  • Products that have been opened or unsealed
  • Products returned in an unsatisfactory condition, including damage caused by the courier or due to insufficient packaging.
  • Any back ordered item that you are notified that is special order. You will be notified via email if an item is special order.
  • Electronic items, inc SRAM Etap, Shimano Di2 parts or spares once the item has been ordered.
  • Groupset Kits are As-Is. No Substitutions or returns/exchanges of individual parts or kits are allowed.

Please note, that we reserve the right to refuse a return if we believe the purpose was for stock trading/reselling and not personal use.

Returned items will be checked by one of our specialists to ensure they meet the criteria set out in this Returns and Refund policy. Please note if you return items which are outside our Returns and Refund policy we will be unable to process a full refund. We will contact you in such circumstances

We cannot offer exchanges for unwanted items; please place a new order for any alternative items you require. All refunds will be issued to the original payment method on the order within 7 days of receipt at our warehouse or once the item has been checked by one of our specialists.

This does not affect your statutory rights.

If you are posting back an item you must fill out a returns form and put a copy of it when it it is posted.

Please click here to fill out a returns form.

Returns should be posted to: Rule #65 Ltd, 1 South Street, Wincanton, Somerset, BA9 9DH

CANCELLATION POLICY

You can cancel or amend any order (or part of an order) placed with us, provided that the order has not yet entered the dispatch process. You will receive a full refund, including postage, via the original method of payment.

If your order, or part of it, has entered the dispatch process, you can refuse to accept the delivery of the item. It will be returned to us as undeliverable where we will refund the amount for the item however, you will still incur costs for the outward postage.

Hammerhead Karoo 3 GPS Bike Computer

Brand:Hammerhead

Code:HMKAROO

Enjoy every ride more than the last with Karoo 3: Navigate effortlessly with clear, easy-to-read maps and precise GPS (no Wi-Fi required). Enjoy a customizable display that keeps all your stats visible, no matter where you ride.

  • Easy to use and customize - Get the advanced features you want without complexity
  • See what matters most to you with best in class routing & visualizations
  • Advanced connectedness with your favorite devices and apps so you can ride the way you want

The Hammerhead Karoo cycling computer represents the pinnacle of innovation, design, and performance. The stunning screen, premium materials, and all-day battery life combine to make Karoo a cycling computer without compromise. Easy to use in every condition thanks to thoughtful hardware and software design, Karoo allows you to focus on the road - and the ride - instead of your equipment. Featuring comprehensive structured workout support, industry best navigation, and a Companion App and Dashboard that let you manage your Karoo without removing it from the handlebars; Karoo helps you hit your training goals, explore new routes, and enjoy every ride. The pièce de resistance is Karoo’s unparalleled control of your bike’s connected components, from SRAM AXS products to E-Bikes to ANT+ lights.

What's In The Box?

  • Hammerhead Karoo Bike Computer
  • 31.8mm Hammerhead Mounting System
  • USB-C to USB-C Charging Cable
  • Quarter-Turn Adapter
  • Safety Lanyard
  • Quick Start Guide
  • All neatly arranged in zero-waste, fully recyclable packaging


Technical Information
ProcessorQuad Core 2.0 GHz
Memory64GB Storage, 4GB RAM
Satellite ConnectivityMulti-band (L1 + L5) GNSS
Satellite ConstellationsGPS, GLONASS, Galileo, QZSS, BEIDOU
ChargingUSB C
Charge time30% in 30 minutes, 100% in 2.5 hours
Battery life15+ hours
Sensor ConnectivityANT+ and Bluetooth
Dimensions (mm)102.8 x 61.66 x 21.1
Display resolution480 x 800 pixels
Rechargeable batteryYes
Screen dimensions3.2"
Screen typeTouchscreen
Water resistanceIP67
Device Weight118grams
Operating Temperature-10C-55C
Barometric AltimeterYes
MagnetometerYes
GyroscopeYes
AccelerometerYes
Ambient Light SensorYes
Temperature SensorYes
Battery Size2600 mAh
Auditory alertsBeeper
Sizing Information
Dimensions (mm)102.8 x 61.66 x 21.1
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