WELLNESS & SLEEP TRACKING FOR PEACE OF MIND: Watch over your baby while they sleep with tracking of heart rate and movement from anywhere. Our smart sock gives you peace of mind by monitoring your little one's sleep patterns. COMPREHENSIVE SLEEP INSIGHTS AT YOUR FINGERTIPS: Understand how your baby sleeps with detailed breakdowns of their sleep cycles. See when they're in deep sleep versus light sleep, track nap times, measure sleep efficiency, and note when they wake up. ACCESS FROM ANYWHERE & SUPPORT FOR TWINS: The Base Station allows you to view your baby's sleep data from anywhere and supports monitoring for twins(2 Socks with 1 Base Station). * A 2.4G private Wi-Fi network is required for the Base Station to connect to your home internet. SECURE SHOE-STYLE DESIGN FOR BABIES 1-18 MONTHS: Designed like a tiny shoe that stays put, unlike traditional socks that babies kick off. Made from soft, breathable fabric that's gentle on delicate skin, with three size options to comfortably fit babies from 1 to 18 months old. LOW-RADIATION TECHNOLOGY: The Sense-U Baby Sock Shoe uses Bluetooth Low Energy (BLE) technology, which emits negligible radiation (1/1000th of a smartphone) and can communicate with the Base Station up to 50 feet away in open space (distance may vary depending on the surroundings). The Long Range Sense-U Smart Sock Shoe Baby Monitor tracks your baby's heart rate, movements, sleep patterns, and naps from anywhere, providing peace of mind and promoting better sleep.