DescriptionMain Material: NylonGender: Women MenBlack elastic band PU + Super bright light guide fiber + ABS engineering plastic switch boxUsage: By switches adjusting the length of light. Flash. Slow flash Close.Size: Length 85cm (33.46")  Width 3.5cm (1.38")Capacity: Fit for Iphone 6, Iphone 6 Pluse, Samsung Note 4, Note 3, Note Edge.Source instructionsLED lights glow, bright fiber optic light guide bar by PU, realize the whole fiber optic light, in order to achieve security warning shiny effect. This product is export quality, through CE, ROHS, EN471 environmental certification, effective rain water, cleaning when disassembling the switch box, line lights, light bars do not move.Suitable for dark environment or night gathering activities, outdoor sports, fairs, through super-bright LED fiber optic light, from a warning EXPRESS role, while the expression of personality, fashion design suitable for day or night use.Battery: Original product itself comes with two button batteries (original as CR2032), long light emission time of the measured data for sustainable 80 hours; battery can be replaceable, convenience stores or supermarkets are sold.Common ProblemsThe battery is replaceable?  YESFlash mode is like?  flash, slow flash, long light, shut down. Fourth gearProbably you can use for how long?  80 hours or so.Emission band can be washed it?  When cleaning the demolition switch box, remove the battery, the other does not move.Battery where to sell?  e-mall supermarket shop watches can easily buy.Package include:1 * 1 BagPicture ShowOutdoor Sports, fairsDark environment or night gathering activitiesRedDetailsWaist bag with earphone hole Please click Disclaimer :About Size:Size may be 2cm/1 inch inaccuracy due to hand measure. These measurements are meant as a guide to help you select the correct size. Please take your own measurements and choose your size accordingly. we cannot accept responsibility for incorrect purchases. About Color:The precise color of the bag items may vary depending on the specific monitor, the settings and the lighting conditions. The items colors depicted should only be used as an approximate guide.