Note:Not included :Bit Expansion BoardFunction: device, , voice intercom, , Learning helper, Network Time SynchronizationApplication: Clock, ID card, Counter, Memory game, Short-range communication, Sports management, CompassDiverse wearables: Watch type, Waistband type, OrnamentsLithium battery: capacity, long battery life, RechargeableProgramming platform: Graphic programmer, Python language programmerOnboard Clock chip, accurate timeOnboard Audio Module, Play sound files, recording and playbackColour:beigeMaterial:plasticPackage Contents:1 x K-Watch expansion board1 x Watch strap1 x Waist strap1 x Screwpack with screwdriverOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.