Applicable platform: android platform, Apple iOS platform Compatible platforms: iOS, ANDROID Applicable people: business, adult, old man, fashion, public, children Machine material: top cover: tempered glass Body: zinc alloy / bottom shell ABS + PC Strap: Silicone CPU type: Hs6620D Heart rate: Ordinary heart rate EM7028 Random access memory: SRAM 128kb SFlash (Read Only Memory): Flash 1M Acceleration sensor: G-sensor 3 axis Vibration : Motor Shrapnel Motor Bluetooth: Built-in BT antenna Charger interface: power supply Contact type: button Touch: Single point Android version: 4.4 or above Apple system version: 8.4 or higher Software features: support time display, step counting, calories, distance, sport mode, hand-up bright screen, sleep monitoring, running track, call reminder, message reminder, sedentary reminder, alarm reminder, etc. Specifications: Screen size:1.3 inches Material:Zinc alloy Battery capacity: 150 mAh Product weight:46g Memory:16mb How to wea:Wristband Mode of operation:touch Interface: USB metal interface Wireless distance: 5m (inclusive) -10m (inclusive) Size:258mm*34.7mm*11.3mm Display:Display size 1.3inch Resolution: 240*240 Capacity:180mAH Package included: 1* Smart bracelet 1* User manual