Data Synchronism The bracelet will sync data automatically after connected with phone by APP (Zeroner), the bracelet time will be calibrated as same as the time of phone. Data Synchronism includes: Steps, calorie, distance. You can check if the data synchronism is completed successfully on the APP. It will take 1 – 2 minutes to sync data for the first time. Data synchronism can be done manually by clicking the refresh button on APP too. Note: The language showing function (include incoming call shows, message checking) only supports English and Chinese, other languages are not supported. Compatibility:The smart wristband only supports the following mobile devices:iOS system: Must be iOS 7.0 or later, Bluetooth 4.0; Such as: iPhone 4S / 5 / 6, iPod touch 5, etc.; Android system: Must be Android 4.3 or later, Bluetooth 4.0; Such as: Samsung S4, Note 3,etc. Bluetooth version: Bluetooth 4.0 People: Unisex table Waterproof: Yes Waterproof Rating : IP67 Colors: Black,Blue,Red Screen: Yes Screen type: OLED Language: English,German,Italian,Russian,Spanish Battery Type: Lithium-polymer battery Battery Capacity: 75mAh Standby time: About 5 – 7 days Functions: Call reminder,Calories burned measuring,Camera remote control,Find your phone,Incoming calls show,Sedentary reminder,Sleep management,SMS Reminding,Steps counting Shape of the dial: Rectangle Case material: PC Band material: TPU The dial thickness: 0.9 cm / 0.35 inches The dial diameter: 1.9 cm / 0.75 inches The band width: 1.9 cm / 0.75 inches Package weight: 0.075 kg Product size (L x W x H): 22.00 x 1.90 x 0.90 cm / 8.66 x 0.75 x 0.35 inches Package size (L x W x H): 20.00 x 10.00 x 4.00 cm / 7.87 x 3.94 x 1.57 inches Package Contents: 1 x I5 Plus Smart Wristband, 1 x Chinese and English Manual