Just twenty grams on your wrist, tracking everything that matters. Heart rate, blood oxygen, steps, stress, sleep and over 100 sports modes. Two interchangeable straps, a metal Milanese Loop and a silicone Pace strap, to match whatever the day brings. With up to seven days of battery life, 5 ATM water resistance and full synchronisation via the NX Wear app with Apple Health, Google Health and Strava. Compatible with Android 6.0 and iOS 11.0.
10,000 steps. Done. What’s next?
Serena is not just tracking. It is a constant challenge. Every day brings new data to push further: steps, heart rate, blood oxygen and calories burned, all measured with precision so you always have a reason to keep moving. Because the goal is not just to reach it. It is to not want to stop.
So light you forget it’s there
Ultra-slim and ultra-light, it comes with two straps to adapt to every moment of your day. The Milanese Loop when you want a more refined look, and the silicone Pace strap when it is time to move. Two styles, one attitude, with a display that lets you check your activity and key data at a glance.
Over 100 ways to train, your way
Running, yoga, swimming or trail. Serena recognises each activity and adjusts tracking to record your metrics accurately: pace, distance, calories or duration, depending on the workout. More than 100 sports modes that adapt to what you do, so your data makes sense and helps you move forward.
Better sleep counts too
Serena monitors your sleep every night so you understand how you really rest. It analyses both duration and quality, helping you identify habits, improve routines and wake up with more energy. Because knowing how you sleep is the first step to feeling better during the day, all managed through the NX Wear app.
Up to 7 days, uninterrupted
A full week of battery life so you can forget the charger and focus on your day. Serena keeps up without interruptions, whether you are training, working or travelling. With 5 ATM water resistance, you can wear it in the pool, in the rain or wherever water should not be a limitation. Built to match your pace.

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