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Starting with the “world’s smallest bike pump” (according to Fumpa) and Knog’s redesigned iconic Oi bell, alongside advanced hydration and heart rate monitors from Nix Biosensors and Garmin, plus sweatproof noise-cancelling headphones from H2O Audio in collaboration with Zwift, we have some of the latest portable cycling tech products in for review. Check out these previews, with full reviews coming soon…

Fumpa Pumps nanoFumpa Bike Pump (£89) 

2025 Fumpa Pump NanoFumpa Bike Pump.jpg
2025 Fumpa Pump NanoFumpa Bike Pump (Image Credit: Farrelly Atkinson)

Fumpa is an Australian company that hand-builds its pumps, and was amongst the first to create an electric bike pump. The nanoFumpa is its smallest one yet.

Designed not for maximum power but for portability, the nanoFumpa claims the title of the “world’s smallest bike pump,” measuring 2.2 x 1 x 1.8 inches and weighing 102g on the road.cc Scales of Truth.

Despite its size, it can inflate one to two road or MTB tyres per charge, reaching a maximum of 120 psi (8.3 bar), and takes around 90 seconds to pump a 700x25c tyre to 90 psi. It’s also built to last a lifetime with replaceable batteries, seals and caps, available in kits.

Buy now for £81 from Sigma Sports

Knog Oi! Prima Bike Bell (£27.99)

2025 Knog Oi! Prima Bike Bell - 2.jpg
2025 Knog Oi! Prima Bike Bell - 2 (Image Credit: Farrelly Atkinson)

The Knog Prima is a redesigned take on Knog’s original Oi bike bell, keeping its minimalist, wrap-around aesthetic while introducing upgrades aimed at better performance and durability, according to the brand. 

One of the biggest changes is the bell’s new hammer mechanism, designed to deliver a “louder, longer-lasting, and more consistent chime”. Knog has also reworked the bell’s shape, giving it tapered edges inspired by the aerodynamic intake of jet engines. 

The Prima comes in two sizes: small (22.2 mm bars) and large (23.8–31.8 mm bars).

Buy from Freewheel for £27.99

Nix Hydration Biosensor (£149) 

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2025 Nix Hydration Biosensor - contents (Image Credit: Farrelly Atkinson)

A hydration sensor? Doesn’t your body already have one of those built-in? Nix says its Hydration Biosensor goes beyond that, tracking when, what, and how much you should drink by continuously analysing your sweat in real time. 

The system is made up of a proprietary single-use patch that detects electrochemical biomarkers as you sweat, measuring your sweat rate, electrolyte loss, and composition. A rechargeable pod clips onto the patch, transmitting live hydration data to the Nix app for instant insights.

The reusable pod offers up to 36 hours of battery life, and the kit includes the pod, a charging case, a USB-C cable, and four single-use patches. I’m currently testing it out, so check back in a couple of weeks to see how it performs. 

Buy now for £149 from Nix Biosensors

H2O Audio Zwift x Ript Ultra Headphones (£227) 

2025 H2O Audio Zwift x Ripr Ultra Headphones - folder flat.jpg
2025 H2O Audio Zwift x Ripr Ultra Headphones - folder flat (Image Credit: Farrelly Atkinson)

Zwift have partnered with H2O Audio to create the RIPT Ultra x Zwift headphones which are “designed for 24/7 athlete lifestyle; workout at the gym, isolate and focus for your race, travel, or recover at home.”

As seen over the ears of Mathieu van der Poel in the warm-up zone during his brief stint in yellow at the 2025 Tour de France, these over-ear headphones feature active noise cancellation and are said to be fully sweatproof. They include removable, washable silicone ear cushions for workouts, plus leather cushions for everyday use.

They connect wirelessly via Bluetooth and have a built-in microphone for hands-free calls. Battery life is said to last up to 50 hours on a full charge, and a protective case is included. 

Buy from H2O Audio for £227

Garmin HRM 600 (£149.99) 

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2025 Garmin HRM 600 (Image Credit: Farrelly Atkinson)

Garmin’s HRM600 is the tech giant’s latest high-end chest strap heart rate monitor, positioned as the top-tier option and replacing the HRM-Pro Plus.

The HRM600 transmits real-time heart rate and heart rate variability (HRV) data to compatible devices and apps, along with running dynamics when paired with a compatible smartwatch. A key feature is its ability to record activities and sync directly to the Garmin Connect smartphone app without requiring a watch.

The strap is machine-washable (after removing the module), and available in two sizes: XS-S for chest sizes 23.5–33.5” and M-XL for 31.5–47”. It has a 5 ATM water rating, making it suitable for swimming and able to withstand pressures equivalent to a 50m dive.

Buy for £149.99 from Tredz

For all the latest full test reports on road.cc, head over to our reviews section. For more advice before splashing the cash you can check out our buyer’s guides, and head over to road.cc Recommends to find all our top-rated products in one place.