Features: The designs of the winding device can neatly store the power supply line and prevent it from winding, Anti drop and durable, no fear of falling, protecting the battery from scratches, Hanging it on the back of the headband to balance the weight of the glasses and alleviate the problem of glasses pressing on the face, Portable buckle designs, can be installed anywhere, freeing hands; Install a soft rubber pad for comfortable wearing. Specifications: Material:ABS Color:Black Cable Length:Approx.30cm/11.18in;31cm/12.2inch Power Bracket Size:Approx.8.3x3.8x6.5cm/3.27x1.5x2.56in Head Strap Applicable models: for Avata Goggles 2 Glasses Option Type:1xBattery Clip Bracket;1xBattery Clip Bracket and 1xG2 Power Cord;1xBattery Clip Bracket and 1xV2 Power Cord,1xBattery Clip Bracket,1xG2 Power Cord and 1xHead Strap,1xBattery Clip Bracket,1xV2 Power Cord and 1xHead Strap; Package Includes: Package A 1xBattery Clip Bracket Package B 1xBattery Clip Bracket 1xG2 Power Cord Package C 1xBattery Clip Bracket 1xV2 Power Cord Package D 1xBattery Clip Bracket 1xG2 Power Cord 1xHead Strap Package E 1xBattery Clip Bracket 1xV2 Power Cord 1xHead Strap note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item