1.Bluetooth 3d glasses 2.For Panasonic 2012 3D TVs 3.30 continue working hours per full charge 4.Short L/T 5.ROHS, CE,FCC Rechargeable rf 3d glasses for Panasonic LED & 2012 Plasma 3d TV:   Specification:

Shutter	"Zero-flicker" Liquid Crystal	Working Current	1.0 mA
Contrast Ratia	1000:1	Weight	39g
SYNC Operation	RF	Transmittance	40%
Battery Type	rechargeable lithium battery
Battery Operating Life	one full charged support 30hours working life.
OperatingCondition	Working Temperature		0°C to 40°C
	Storage Temperature		-5°C to 50°C