mode: time， steps， distance， energy<br />three-proof grade: ip65<br />bluetooth class: bt4.0<br />battery: polymer battery<br />standby time: over 3 <br />charging method: standard usb charging<br />charging time: about 30 min<br />working temperature: -20▲c∥45▲c<br />storage temperature: -40▲c∥45▲c<br /><br />material: abstpu<br />color: black， blue， pink<br />net weight: 22g<br />package weight: 54g<br />display size: 0.49inch<br />strap total length: 23.5cm<br /><br />package content:<br />1 x smart bracelet<br />1 x user manual<br /><br />100%  and high quality<br />stylish design， simple and powerful<br />light weight， convenient to carry<br />waterproof design， you don't need to take off it in rainy  or wash hands<br />the bracelet is just water resistant pi55， please don't wear it to shower or swim<br />adjustable wrist strap， you could wear more comfortable<br /><br />the smart bracelet can completely record the user's daily data of sleep and exercise<br />use various ways to synchronized data， support ios and android systems， also can synchronized data with pc<br />support low-power bluetooth 4.0 wireless data synchronization<br />with a standard usb port， support using usb charging<br />the clock will remind by vibration ，continue 6 times<br />users can share the data through some social terminal， also can make a pk competition with friends<br />it is a helpful tool for you to manage your body and keep you a healthy life<br /><br />synchronized with the following devices:<br />support  4s、5s、ipad3 ， etc， ios7.0 above and bluetooth 4.0<br />support android 4.3 above and bluetooth 4.0<br />support windows xp， vista，win7 and win8 systems<br /><br />note:<br />you should charge bracelet 30mins when you get bracelet<br />keep the front of screen upwards，then turn your wrist one timeturn wrist outward and turn back， then the bracelet will be turn on automatically<br />you could change the bracelet function mode through two ways， turn over wrist or knock on the screen by finger， everytime the screen display will change one time<br />you should install app， go to app store or play store download &amp;amp;amp;amp;amp;quot;zeroner&amp;amp;amp;amp;amp;quot; and install it<br />make sure your mobile device connect with internet via wi-fi or 3g<br />you should register a new account if you don't have it， then set up your information<br />the bracelet could binding an account one time， if you want to binding with other account， you should disconnect and rebinding it again