Hign-concerned Chemical:None Battery Life:5? Band length[mm]:210 Band width[mm]:22 Weight[g]:160 SIM Card Slot:no Voice assistant built-in:YES Bluetooth-compatible Version:5.0 Wi-fi:No Metrics measured:Heart Rate Monitor,Blood Oxygen Monitor,Sleep Monitor,Blood Pressure Monitor Activity Tracked:other,Steps Tracker,Distance Tracker,Calorie Tracker,Activity Tracker Touch Screen:YES Category:Smart Watches Screen Material:AMOLED Band Detachable:Yes APP Download Available:Yes Battery Detachable:No Resolution:360*360 Display Size:1.43 Movement Type:Electronic Style:fashion Application Age Group:ADULT Screen Shape:Round Case Material:Alloy Band Material:RUBBER Waterproof Grade:Life Waterproof SIM Card Available:No Mechanism:No Multiple Dials:Yes GPS:No Network Mode:None Battery Capacity:300-450mah Rear Camera:None RAM: 128MB ROM: 128MB System:Android Wear,Android OS,IOS Type:On Wrist Compatibility:All Compatible Language:English,Russian,Spanish,POLISH,Portuguese,Turkish,FRENCH,german,KOREAN,japanese,UKRAINIAN,HEBREW,Dutch,Arabic,Indonesian,Greek Function:fitness tracker,sleep tracker,Mood Tracker,Message Reminder,Call Reminder,Answer Call,Push Message,Big Three Needles,24 hour instruction,Chronograph,Alarm Clock,Small Second,World Time,Permanent Calendar,Power Reserve,Month,Heart Rate Tracker,Interactive Music,Noctilucent,Calendar,Countdown,Calculators Brand Name:GEJIAN Origin:Mainland China Certification:CE Product parameters: ? Bluetooth: 5.0 ? Screen size: 1.53 ? Screen resolution: 360 * 360 ? Touch type: Full screen touch ? Screen material: TFT ? Compatible systems: Android 4.4 or above, iOS 9.0 or above ? Battery capacity: 300mAh ? Charging method: Magnetic charging ? Battery Type: Lithium Battery Product Features: Setting Functions: Dialing, Flexible Island, Screen Rest Time, Brightness Setting, Brightness Setting (Off Screen Pointer), Button Adjustment, Raise Hand to Illuminate Screen, Vibration Intensity, Do Not Disturb Mode, Password Setting, Language Selection, Power saving Mode, Time and Date Setting, NFC, Connect Phone, Bluetooth Call, Factory Reset, Restart, Shutdown, etc Pull down function: Do not disturb mode, Bluetooth switch, brightness adjustment, settings, shutdown, alarm clock, password lock, style change, off screen pointer adjustment, phone connection Reminder function: medication memory, female physiological health memory, water memory, sitting posture memory Language: Chinese, English (default), Russian, Spanish, German, Italian, French, Portuguese, Polish, Dutch, Greek, Turkish, Romanian, Japanese, Traditional Chinese, Hebrew, Czech, Slovak, Hungarian, Arabic, Indonesian, Korean, Vietnamese, Thai, Persian, Ukrainian, Burmese Please note that: Wearable devices monitor human activities through electronic sensors and are at the level of consumer electronics. Please do not compare it with hospital equipment, it is not medical equipment! After receiving it, please charge it for 2 to 3 hours. After a long period of delivery, it has run out of power. Do not use high-power power sources or fast charging to charge the watch, in order to avoid damaging it. Suggest using 5V 1A. Before use, please read the user manual and connect it to the watch through the application. For Android users: Please authorize the app to access the functions required by the phone and always keep it running. This smartwatch supports Life waterproof function. Therefore, bathing, swimming, diving, and taking hot baths are prohibited. We guarantee that each device undergoes rigorous testing before shipment... So all products can guarantee 100% high quality before shipment! ? Please contact us, we have the product you are looking for. thank you!