Gone are the days where scales would simply measure your weight. These Fitbit scales are Wi-Fi enabled to help you understand and reach your weight goals. From providing your weight, body fat percentage and BMI to allowing you to set goals and track your progress, these scales will help to keep you motivated by giving you a more rounded approach to weight. ,Item details: Height:31.2 cm, Width:3.3 cm, Length:31.2 cm,Style: Battery included- 4 AA , Battery type- 4 standard 1.5 V size , Measurement range: 9-158 kg,Wireless 802.11b,Care and composition: Care instructions: Not intended for use by children under 10. Always consult your physician. Slippery when wet.