Best Smart Watches for Tracking Workouts Under £100
Smart watches have evolved far beyond luxury gadgets. In 2025, these fun fitness companions are affordable, packed with features, and ready to help you stay motivated and on top of your health without blowing your budget. Leading brands like Amazfit, COLMI,
HAYLOU, and ZEBLAZE offer models under £100 that combine solid health tracking, user-friendly apps and stylish designs that fit into everyday life.
Whether you are a casual runner, a gym regular or someone who wants to improve their daily activity, these watches provide the functionality you need without the high premium price tag.
What to Look For in a Budget Fitness Smart Watch
Before choosing an affordable smart watch, it helps to know what features truly matter for workout tracking and daily health monitoring.
Accurate sensors for heart rate, SpO₂ (blood oxygen), and stress monitoring keep you informed about your health in real-time.
Multiple workout modes let you switch between running, cycling, swimming, or yoga, ensuring precise tracking tailored for each activity.
Built-in GPS is a standout feature for a lot of outdoor runners and cyclists who want accurate distance and route tracking without carrying a phone.
Durability counts too look for waterproof ratings like IP68 so your watch can withstand sweat, rain, and swimming.
Battery life is another big factor; you want several days of use on a single charge to avoid constant interruptions.
Easy-to-read displays, intuitive controls and companion apps complete the package, along with a lightweight feel for all-day comfort.
These qualities shaped our top smart watch picks under £100 below.
COLMI C8 Max – A Stylish All-Rounder
The COLMI C8 Max 1.93" Smart Watch is perfect for anyone who wants a fitness tracker that doesn’t look like a typical sports gadget. Its sleek alloy case and bright HD colour display give it a premium look and feel you’ll want to wear daily.
This watch delivers on the essentials: continuous heart rate monitoring, blood oxygen levels, sleep tracking, and even stress analysis powered by the advanced GoMore algorithm.
Its IP68 waterproof rating means it’s ready to keep up during swimming sessions or rainy runs. A reliable step counter tracks your daily calories and distance to keep motivation high.
With wireless charging and 3 to 7 days of battery life, you won’t worry about frequent power-ups.
The curved screen design fits nicely on your wrist, and the clean COLMI Fit app lets you personalise watch faces and review your health data effortlessly.
Key Features:
• 1.93" HD display with 240×288 resolution
• Heart rate, SpO₂, sleep quality, and stress monitoring
• Accurate sleep tracking via GoMore algorithm
• IP68 waterproof for water and sweat resistance
• Built-in step counter with calorie and distance tracking
• Wireless charging with 3–7 days battery life
• Stylish curved screen and comfortable strap
Ideal for: Fitness newcomers and style-conscious users who want a dependable fitness companion under £100.
Amazfit GTS 4 Mini – Precision Tracking on a Budget
Amazfit has a reputation for accurate wearables, and the GTS 4 Mini packs flagship tracking capabilities into a compact frame at an affordable price point.
Its 1.65" HD AMOLED always-on display with a crisp 336×384 resolution means you get vivid visuals anytime. It tracks over 120 sports modes, including running, swimming, cycling, and yoga, with automatic recognition for some activities.
The built-in 5-satellite GPS system offers precise outdoor tracking for routes and distances, crucial for runners and cyclists.
Alongside continuous health monitoring of heart rate, SpO₂, and stress, it provides insights into your sleep cycles, including REM. For women, menstrual cycle tracking is an added bonus.
All this comes with an impressively long 15-day battery life on typical use, or 9 days with heavy use. And at just 31g, its lightweight design won’t weigh you down.
Key Features:
• 1.65" HD AMOLED always-on screen, 336×384 resolution
• 120+ workout modes and automatic activity recognition
• 5-satellite GPS for reliable outdoor tracking
• 24/7 heart rate, SpO₂, and stress monitoring
• Sleep tracking with REM analysis
• Menstrual cycle monitoring
• 15-day battery life, 31g lightweight design
Ideal for: Users looking for accurate sport and health tracking in a sleek, lightweight watch.
HAYLOU Solar 5 – More Than Fitness Tracking
The HAYLOU Solar 5 upgrades the budget smart watch category by including Bluetooth calling and voice assistant capabilities alongside a smooth 1.58" AMOLED display.
With over 100 workout modes, it covers everything from swimming to strength training. The watch monitors essential metrics like heart rate, blood oxygen, stress, sleep, and female menstrual cycles.
Rated IP68 waterproof, it’s robust enough to handle swimming, rain, and workouts without worry.
Battery management is another highlight, offering up to 15 days on standard use and an incredible 40 days in power-saving mode.
Personalisation options include over 150 watch faces plus the ability to upload your own photos - helping you stand out from the crowd.
It also includes wellness reminders like sedentary alerts and hydration notifications.
Key Features:
• 1.58" AMOLED display, sharp 480×480 resolution, 60Hz
• Bluetooth calling and built-in voice assistant
• 100+ workout modes and real-time fitness monitoring
• IP68 waterproof for swimming and outdoor use
• 15–40 days battery life depending on mode
• 150+ watch faces and wellness app reminders
Ideal for: Active professionals and fitness fans who want comprehensive health features and smart watch connectivity.
COLMI V76 – Explorer’s Smart Watch
Built for adventure, the COLMI V76 brings advanced GPS tracking and outdoor features into a stylish package you can wear anywhere. Its 1.43" Ultra AMOLED display with 466×466 resolution shines even in bright sunlight.
Multi-constellation GPS (including Beidou and GLONASS) ensures precise location for cycling, hiking, or trail running. Additional features include a compass, barometer, and altimeter, providing essential environmental data during outdoor activities. The rugged zinc alloy and plastic body is both durable and surprisingly lightweight.
The watch supports over 100 sports modes and continuous health monitoring for heart rate, oxygen, sleep, and stress. Bluetooth calling and smart notifications help you stay connected on the move. With a powerful battery lasting up to 10 days and IP68 waterproofing, the V76 is built or all weather and terrain.
Key Features:
• 1.43" Ultra AMOLED 466×466 screen with sunlight visibility
• Multi-constellation GPS and sensors (compass, altimeter, barometer)
• Over 100 sports modes and detailed workout tracking
• Heart rate, SpO₂, sleep, and stress monitoring
• Bluetooth calls and smart notifications
• 10-day battery life and IP68 waterproof rating
• Rugged zinc alloy and plastic design
Ideal for: Outdoor athletes and explorers who need accurate GPS and rugged durability.
ZEBLAZE Beyond 3 Pro – For Those Who Want It Big
Prefer a larger display that’s easy to view during intense workouts or when outdoors? The ZEBLAZE Beyond 3 Pro boasts a massive 2.15" touchscreen with HD clarity and bright visibility.
It covers all essential fitness tracking like heart rate, steps, calories, and sleep. Built-in GPS lets you track routes for running, cycling, or hiking without your phone. Multiple sport modes tailor the watch to your workout, helping optimise performance.
The watch also offers smart notifications for incoming calls, texts, and app alerts. Its durable, water-resistant design means it’s tough enough for swimming or sweaty sessions. Personalise your watch faces to match your style or mood.
Key Features:
• Large 2.15" HD touchscreen with sunlight visibility
• GPS for outdoor route tracking
• Full health monitoring (heart rate, sleep, calories)
• Multiple workout modes
• Long battery life for several days of use
• Smart notifications for calls and messages
• Water resistant and stylish design
• Customisable watch faces
Ideal for: Fitness enthusiasts who want a big, bright screen and reliable multi-sport tracking on a budget.
Which Smartwatch is Best for You?
Choosing a smart watch under £100 depends on your priorities:
• Sleek and stylish daily wear → COLMI C8 Max
• Sport tracking and GPS accuracy → Amazfit GTS 4 Mini
• Bluetooth calls and premium features → HAYLOU Solar 5
• Outdoor activities with navigation → COLMI V76
• Large display for easy workout visibility → ZEBLAZE Beyond 3 Pro
All of these deliver well-rounded fitness tracking and smart functions—proving you don’t need to spend hundreds to stay motivated and healthy.
Final Thoughts
Smart watches have become essential fitness tools, and in 2025, affordable models offer features once only found in premium devices. Brands like COLMI, Amazfit, HAYLOU, and ZEBLAZE push boundaries to help everyone stay active, track progress, and stay connected without overspending.
Whatever your fitness level or goals—5Ks, gym reps, or daily steps—the right watch motivates you and fits your lifestyle. Choose the one that suits your needs, and you’ll get a powerful, stylish companion that works as hard as you do.