Hammerhead
Hammerhead Karoo 3
$524.99
Released 2024-05
Best Bike Computers · head-to-head
Hammerhead Karoo 3 vs Bryton Rider S800
A sourced, side-by-side comparison. Bryton Rider S800 is cheaper at $399.95. Every spec and price links to its source.
Bryton
Bryton Rider S800
$399.95Cheaper
Released 2022
Which is better: the Hammerhead Karoo 3 or Bryton Rider S800?
The Bryton Rider S800 wins 1 of the 1 specs we compare head to head; the other wins 0. The Bryton Rider S800 is the cheaper at $399.95. The Bryton Rider S800 both leads on specs and costs less — the straightforward pick.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Hammerhead Karoo 3 | Bryton Rider S800 |
|---|---|---|
| US price | $524.99 | $399.95 |
| Brand | Hammerhead | Bryton |
| Released | 2024-05 | 2022 |
| Display size (in) | 3.2 in | 3.4 in |
| Touchscreen | Yes | Yes |
| Battery life hours | 15 | 36 |
| Preloaded maps | Yes | Yes |
| Multiband gnss | Yes | No |
| Connectivity | ANT+, Bluetooth, Wi-Fi | ANT+, Bluetooth, Wi-Fi |
| Weight (g) | 118 | 106 |
| Release | 2024-05 | 2022 |
Sources — Hammerhead Karoo 3: shop.sram.com (verified 2026-06-19). Bryton Rider S800: global.brytonsport.com (verified 2026-06-19).
What's the difference between the Hammerhead Karoo 3 and Bryton Rider S800?
Where the two actually differ on the specs we track (4 of 7). Matching specs are omitted.
- Display size (in): Hammerhead Karoo 3 3.2 in vs Bryton Rider S800 3.4 in
- Battery life hours: Hammerhead Karoo 3 15 vs Bryton Rider S800 36
- Multiband gnss: Hammerhead Karoo 3 true vs Bryton Rider S800 false
- Weight (g): Hammerhead Karoo 3 118 vs Bryton Rider S800 106
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Hammerhead Karoo 3
Both whitelisted testers reviewed the Karoo 3. DC Rainmaker ran multi-month, side-by-side testing against the Garmin Edge 840 and Wahoo ROAM V2 (GPS/elevation data plots, battery-burn charts). Cycling Weekly did a hands-on but qualitative test on a Morocco ride, with no measured metrics. Both praise navigation and user-friendliness and call it a legitimate Garmin/Wahoo rival. Both note it is not meaningfully faster / slow to power up despite the new processor and RAM. On battery they diverge: Cycling Weekly found the 15+hr claim falls short in real use, while DC Rainmaker found the claimed ~30% improvement roughly holds (about 12-13hr realistic). No RTINGS or lab-benchmark source exists for this model. (2 sourced reviews, 2 lab-tested.)
Praised: Class-leading mapping and navigation (best-in-class per CW; top-2 and a core strength per DCR); Superior high-resolution 3.2-inch display; Standout user-friendliness and setup.
Flagged: Not meaningfully faster / slow to power up despite the new processor and RAM; Battery life is the weak point vs Garmin/Wahoo (15+hr claim fell short in real use); Weak structured-workout player / interface needs improvement.
Bryton Rider S800
Only one whitelisted tester (Cycling Weekly) published a hands-on review of this exact model; DC Rainmaker, TechRadar and Digital Trends had none. It praises excellent hardware — a bright 3.4in touchscreen, roughly week-long battery, and rich climb/interval data (Climb Challenge) — but pans the Bryton Active app as the worst mobile app the reviewer has ever seen, plus one unexplained mid-ride freeze that lost two hours of data. (1 sourced review.)
Praised: Big, bright, responsive 3.4in colour touchscreen; Long battery life; needs charging only about once a week; Rich features and data options for climbing and intervals (Climb Challenge).
Flagged: Bryton Active app is poorly laid out, unattractive and hard to navigate; Slow, unreliable data sync between app and head unit (reviewer resorted to a laptop); One unexplained mid-ride freeze lost two hours of training data.