Usage:Personal Size Weight:31*5.4mm 5g Color:Black White Blue Pink Compatible devices:Bluetooth 4.0, IOS 6.0 and andro above system Power:CR2016 battery, Power consumption: 5uA Accessories:Manual, steel ring softward updater support:Yes Warranty:1 year OEM &ODM:Yes Certification:CE&ROHS Keyword:anti-lost alarm key finder