WHOOP 4.0 Wearable with 6 Month Membership - Black Band (4.0)

No screen. No notifications. Nothing but nonstop data collection. Designed to be worn 24/7, the advanced WHOOP 4.0 is lightweight and minimal so nothing gets in the way of a snatch, swing, or stride. The all-new WHOOP 4.0 is smaller, smarter, and designed with new biometric tracking, including skin temperature, blood oxygen, and more. WEAR IT ANY-WEAR™ Comfortable enough to wear non-stop with new SuperKnit bands, but flexibly designed to be worn in new WHOOP Body sensor-enhanced technical apparel. WAKE UP AT THE OPTIMAL TIME Set a haptic alarm that gently vibrates to wake you at the optimal time based on your sleep needs and cycles. MONITOR YOUR HEALTH** A robust sensor suite allows you to monitor your key vital signs: Blood oxygen, skin temperature, heart rate, and more. WHOOP 4.0 may be small but it packs highly advanced technology. Powered by a robust sensor suite, on-the-go charging, bluetooth capabilities, and beyond, 4.0 was engineered to keep up with your day-to-day life. 5 LEDS & 4 PHOTODIODES Capture your data continuously with best-in-class accuracy validated in lab studies and with third-party testing. WATERPROOF* UP TO 10 METERS Both WHOOP and our battery pack are waterproof* so you can wirelessly charge your 4.0 even while in the shower, sauna, or washing dishes. MULTI-DAY BATTERY LIFE Don’t miss a second of your data with our new and improved battery pack, engineered with a 4 to 5 day battery life. BLE-COMPATIBLE Engineered with Bluetooth capabilities, broadcast your heart rate onto BLE-compatible devices including bikes, rowers, and more. NOW 33% SMALLER WHOOP 4.0 is 33% smaller than the 3.0, but engineered with an even more powerful sensor configuration. Customize your WHOOP Band, Hook, Clasp, and Fast Link™ slider with a variety of colors from WHOOP Your Way. Plus, shop our line of SuperKnit Luxe Bands with precious metal plating.