We should have surveillance cameras in public places because they ensure public safety. ... Through surveillance cameras, the police can both prevent crimes from happening and can quickly solve criminal cases with material evidence. In addition, surveillance cameras protect against property theft, and vandalism

Rabu, 21 Juni 2017

Take Now US $32.89 Global Version Xiaomi Mi Band 4 Smart Watch Heart Rate Fitness Activity Tracker Bracelet Colorful D






Global Version Xiaomi Mi Band 4 Smart Watch Heart Rate Fitness Activity Tracker Bracelet Colorful D

[33034900502] Comparison between Mi Band 4and 3 Global version Mi band 4 Global version Mi band 3 Image Dimension 17.9 x 46.9 x 13mm 17.9 x 46.9 x 12mm Wristband Length 247mm 247mm Battery Capacity 135mAh 135mAh Waterproof Level 5ATM[2] (50m-swimming) 5ATM[2] (50m-swimming) Screen Size 0.95'' 0.78'' Sensor 3-axis accelerometer + 3-axis gyroscope; PPG heartrate sensor; Capacitive proximity sensor Triaxial acceleration sensor, PPG heart rate sensor Matching requirements BT5.0 BLE Bluetooth 4.0 Android 4.4 or iOS9.0 and above mobile phones Message Notification Display message content Display message content Sports Data Display Display Weather Forecast Display Display Exterior Size Wristband adjustable length: 155 - 216mm Parameter Weight: 22.1g Water resistance rating: 5 ATM Display type: AMOLED Screen size: 0.95’’ Resolution: 120x240 RGB Color depth: 24 bit Screen brightness: Up to 450 nits Touchscreen type: On-cell capacitive touchscreen Screen protection: 2.5D tempered glass with anti-fingerprint coating Button: Single touch button (wake up, go back) Wrist strap material: TPU RAM: 512K ROM: 16MB Wireless connectivity: BT5.0 BLE Sensors: 3-axis accelerometer + 3-axis gyroscope; PPG heart rate sensor; Capacitive proximity sensor Battery: LiPo, 135mAh Standby time: 20 days Charging Time: ≤ 2 hours System requirements: Android 4.4, iOS 9.0 or above Package contents: Mi Smart Band 4 x1, Wrist strap x1, Specialized charging cable x1, User guide x1 Functions Swim Wearable | OTA Upgrade | And so on Package Contents 


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