Brand Name :Lerbyee Band Material :Silica Function :Blood Pressure,Passometer,Sleep Tracker,Push Message,Blood Oxygen,Heart Rate Tracker,Alarm Clock,Chronograph,Activity Tracker,Fitness Tracker,Social Media Notifications,Message Reminder,Week,Call Reminder Language :Korean,Russian,Portuguese,Spanish,English,German,Italian,Japanese,French Style :Sport Screen Type :LED Case Material :PLASTIC Waterproof Grade :Life Waterproof Band Detachable :Yes Application Age Group :Adult Touch Screen :Yes Model :WP103 Compatibility :All Compatible Screen Style :Rectangle/Square-shape led size :0.66" Battery Capacity :Lithium Polymer Battery/80mAh bracelet size :50*24*11.6mm authentication :CE/ROHS/FCC/PSE Compatability :Android 4.4 / iOS 8.4 and above system Charging time :1-2 hours Useing time :about 3days Feature :Heart Rate Blood pressure Monitor COLOR :black/red/blue