PURRL I11 43mm Zinc alloy

specification Processor: HS6620D Waterproof rating: IP68 Bluetooth version: Double BT 4.0 + 3.0 Compatible operating system: Android 4.4 or higher, iOS 8.0 or higher Heart rate module: SC7R30, 128KB+1M, red light + green light module, support dynamic heart rate/blood pressure/oxygen detection Operation mode: full touch Screen size: 1.28inch TFT Resolution: 240 * 240 pixels Battery battery capacity: 280 mAh Standby time: about 15 days Use time: about 2-3 days Charging time: about 2.5 hours Power supply: 5V / 1A Charging method: clip-on charging Appearance size: 210*43*13 mm (total length of strap * case diameter * thickness) Material: Zinc alloy shell/+environmentally friendly TPU strap/leather strap