* HD Video Call: 5M Pixels Front Camera to Support High Quality Video Call through 4G Network or WIFT; * Real-time Al Locating: 9 Types of Positioning with Al Algorithm to Provide Accurate Locating ; * 5ATM Waterproof: Support Professional Swimming Mode; * Robust Battery Life: 800mAh Battery Capacity with Power Saving Technology And 50% Charge Within 20 Minutes; * Special Lighting Guard: Special Lighting Design to Provide Night Walk Lighting for Safety Warning.