Key Features:Fitness tracker bracelet comes with a pedometer, distance counter, heart rate monitor and moreIP68 waterproof design can be used in any weather conditionCompatible with both iOS and Android smartphones120mAh battery treats you to 150-hours usage time on a single chargeManufacturer SpecificationsGeneral:Chip model: Nrf52832Display Size: 0.96inch OLED screenScreen resolution: 80x160Heart rate sensor: PAH8001BluetoothSleep monitorPedometerBattery Size: built in 120mAhBattery Standby: up to 150 hoursAlert type: VibrationApp Name: WearfitCompatible OS: Android 4.4 / iOS 8.0 and above systemWaterproof rating: IP68Touch buttonAPP support language: Chinese (simplified/traditional), English, French, Japanese, German, Spanish, Russian, Italian, Malaysian, Portuguese, Korean.Companion Function (with smartphone):Bluetooth calling: Caller IDMessaging: Message reminderHealth tracker: Heart rate, pace, movement patterns, mileage, burn calories, continuous heart rate monitoring, monitoring of sleep, stopwatch, raised my hand against the bright screen, shake photograph, sedentary reminds, find the mobile phone, alarm clock, remind the medicineDo not disturb the mode (22:00-8:00 hand ring stop receiving notice, lifting the hand on screen function does not work)24h 12h time format selection.Dimensions:Main Product Dimensions: 220x 20x 10mm (L x W x D)Inner strap length using last hole: 210mmInner strap length using first hole: 125mmMain Product Weight: 31gWeight/dimension is for the main item of this boxed product, to help you compare product sizes before buying: please do not base your shipping calculations on this price - shipping prices depend on your cart contents, shipping destination, and shipping method: please use the checkout to select options and preview shipping price for your total order.Package Contents:Smart WristbandCharging CableUser ManualChange Log 06th Aug 2018. Remove Blood PressureEnjoy the following benefits: Orders processed and shipped within 1 working day12 month warrantyIn-house QCMember discountsAward winning customer supportQuantity order discounts