Ultralite UL4-31 HD KIT

Designed to facilitate wireless coordination and communication, the UL4D UltraLITE from Eartec is a 4-person dual-eared headset system suitable for use on film sets, theater sets, and more. Each headset weighs only 4 oz, can receive audio at a speed of 1.152 Mbps, and can last six hours before requiring a recharge, which you can accomplish via the included charging station. Its microphone can swivel 270°. When you're done, simply pack it all up in the case. These headsets will receive audio at ranges of over 1000'.

Headset
Standard Digital Enhanced Cordless Telecommunications (DECT 6.0)
Type 4 x dual-eared
Frequency 1920 to 1930 MHz
Channel Bandwidth 1.728 GHz
Modulation Type GFSK
Transmission Speed 1.152 Mbps (Baud rate)
Duplex Operation Time Division Duplex (TDD)
Speech Coding ADPCM / 32-bit/s
RF RF Accessing: Time Division Multiple Access (TDMA)
Range 1312.3' / 400 m in open space
Power Supply Rechargeable Lithium battery, 3.7 V, 800 mAh, 2.0 Wh
Charger AC adapter
Input: 110-40 VAC
Charge Time 3 hours
Operation Time 6 hours
Operating Temperature 32 to 50°F / 0 to 10°C
Storage Temperature 14 to 140°F / -10 to 60°C
Weight 4 oz / 113.4 g (per headset)
Packaging Info
Package Weight 4.6 lb
Box Dimensions (LxWxH) 12.2 x 9.4 x 7.1"