Note: IP65 waterproof means that steeping depth don't exceed one meter and steeping time don't exceed 30 minutes.Brand��ExcelvanModel��I5 PlusColor��Black， Red， BlueWristband Material��TPUCase Material��PCNet Weight��25 gScreen��OLEDScreen Size��0.91 inchResolution��128 x 64Bluetooth��V4.0Waterproof��IP67Battery��75mAh Li-batteryBattery Duration��5-7 daysOperating Temperature��-20 oC to 45 oCPackage Size��15 x 9.5 x 3cmWeight��90 gProduction Function: -Bluetooth 4.0 smart bracelet.low-energy consumption-Two control mode: Touch Screen control，Gesture control-USB design for charging，PC Machine，TPU strap-Waterproofing grade:IP67-0.91' OLED display-Call ID display，SMS notification，message push: Facebook，Twitter-Pedometer:Steps，distance， calories calculation and display-Self-timer; Find phone function-Vibration Alarm clock function，timing function-APP support available--download app "Zeroner" from google play or app store-3D Senser-Lithium ion polymer battery: 75mAH，Standby time:5~7 days-USB charge，full charge only need 30 minutes-Size: 46*18.7*7.9mm(Machine)-Unit Weight: 26g-Available color: Black， Red， BlueThis smart bracelet with OLED screen clearly displays health parameters including steps， calories， distance andtime. With TPU adjustable wristband and light weight feature， you can wear it comfortably， such as running，climbing. When you do exercise， it can record your sports data. When you sleep， it can monitor your sleep. It alsocan wake you up by vibrating gently. All these data can be synchronized and analyzed on your smartphone. HighPerformance and advanced smart features are the best advantages as your indispensible personal fitnesscompanion everyday. It's our pleasure to help you have a funny life and a health life!