3D Playback Type: Active Shutter 3D Method Transmittance Method: RF (Bluetooth)/ Full HD 3D Glasses Standard Compatible Battery Type: Lithium-ion Polymer Rechargeable Battery Battery Duration: Approximately 30 hours of operation for a 30-minute full battery charge (Approximately 3 hours of operation for a 2-minute battery charge) *The battery duration will change as per the total usage time with the number of charge/discharge cycles Package Included: 1 Pair of Eyewear Note: These glasses are only compatible with 2012 VIERA HDTVs Accessory Compatibility Chart