Purchase Note:1. JA-02 II has only one USB Type-C charger cable in the package contents, you can use any 5V battery charger. If you' re not which one is correct, just use your smart phone charger to charge it. PIs make the charger' s Rated Output Currrent Greater than 1A. (Nearly all smart phone chargers meet this requirement.)2. As it has built-in lithium battery, don' t dismantle JA-02 lI.color:BlueMaterial: ABS + electronic componentsPackage Contents:1 x receiver1 x With Chinese and English manual1 x USB-Type C Charger CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.