Dual Power Multi-flip pedometer Specification: Solar and battery powered Multi Functions include Step count,calorie and distance traveled calculations Flip Cover to view pedometer reading Large imprint area Long battery life Comes in various transparent color covers Power Source:AG-10×1pc Unit Dimension: 50×28×45mm Inspection standard: Generally the acceptable inspection standard based on AQL 2.5 / 4.0, if you need higher inspection standard,first we need to check if we can reach this standard,and then check the price Battery life span: About 2 years,then you need to change the battery,or when the battery is useoff,the solor power is still on function CE certificate ROHS