Herz P1 Heart Rate Monitor Chest Strap - Bluetooth 5.0 & ANT+, HRV, IP67 | 30-240 BPM, HRV & Calorie Tracking, 48-Hour Offline Memory, 65-95 cm Adjustable Belt, Rechargeable

Key features

• ACCURATE HEART RATE MONITOR CHEST STRAP - Electrode sensing reads the heart's electrical signal straight from the chest, so this chest strap heart rate monitor tracks 30 to 240 BPM within +/- 1 BPM and registers interval spikes and recovery dips the moment they happen, instead of lagging behind an optical wrist reading. A heart rate strap you can pace off, whether you are holding a zone on the treadmill or chasing a target on the last rep.
• BLUETOOTH HEART RATE MONITOR AND ANT+ IN ONE - Broadcasts on both protocols at once. As a Bluetooth heart rate monitor it pairs with phones and tablets over 60 m; as an ANT+ heart rate monitor it reaches 30 m to bike head units, cardio machines and studio displays that Bluetooth alone cannot talk to. Dual-band means the chest strap feeds your screen and the equipment together, with no dropouts mid-session.
• HRV MONITOR, CALORIES AND STEP COUNT - More than a BPM monitor: this heart rate variability monitor reports HRV, calories burned and steps live, giving you the load and recovery picture that zone training and rest-day calls depend on. A heart rate tracker that shows the session as it happens and stores it for review afterwards in the X-FITNESS companion app or the training app you already use.
• ADJUSTABLE CHEST BAND FITS 65-95 CM - The soft woven heart rate belt adjusts across a 25.6 to 37.4 in chest, a chest band for men and women that holds position through sprints, burpees and rough road so the sensor keeps contact instead of sliding. The module is 11 g and 56 x 29 x 10 mm, and the chest belt unclips from the sensor for rinsing after a sweaty session.
• IP67 RATED, RECHARGEABLE, 48-HOUR MEMORY - Sealed to IP67 against sweat, rain and splashes for outdoor training in weather. The rechargeable lithium-ion cell charges from the supplied cable, so there are no coin cells to hunt down, and this HR monitor chest strap holds up to 48 hours of heart data on board - leave the phone in the locker, ride out of range, and sync the whole session later.
• RUNNING HEART RATE MONITOR - HerzP1 heart rate monitor for running built for the work optical sensors struggle with: treadmill intervals, tempo miles and long trail loops where cadence lock and arm swing throw wrist readings off. Chest sensing stays honest through the surge, so your splits and your effort finally agree with each other.
• CYCLING HEART RATE MONITOR - ANT+ is the language most bike head units and indoor trainers speak, so a heart rate monitor for cycling that carries it connects to gear a Bluetooth-only strap cannot reach. Holds a clean signal through a winter block on the trainer, a Saturday road ride, or a class where the bike itself is reading your effort.
• GYM, STUDIO AND CLASS TRAINING - A heart rate monitor for exercise that sends live data to compatible gym equipment and class displays, so the effort shown on the leaderboard reflects what your heart is doing rather than a wrist estimate. This workout heart rate monitor suits HIIT blocks, circuits, functional classes, weight sessions and rowing, where wrist contact breaks every time you grip a bar.