New (open box) never have been worn or used. Have been tested and work as they should.

Active Shutter 3D Eyewear For VIERA Panasonic TY-ER3D4MU Active ...

The Panasonic TY-ER3D4MU are lightweight (27g), rechargeable active shutter 3D glasses designed for 2012-2013+ Panasonic VIERA Full HD 3D TVs (RF/Bluetooth system). They offer up to 30 hours of viewing on a 30-minute charge, with a 2-minute "quick charge" providing 3 hours of use.

Key Features and Details:

Technology: Active Shutter (RF/Bluetooth) for high-contrast, Full HD 3D.

Compatibility: Works with 2012+ Panasonic plasma/LED TVs, including VT50, GT50, ST50, UT50, WT50, DT50, and XT50 series.

Charging: Rechargeable via USB (mini USB socket under the nose bridge).

Comfort: Lightweight design with adjustable features for different face sizes.

Pairing: Activated by holding the power button while near the TV.