Sennheiser Spectera SEK UHF Bidirectional Wireless Bodypack Mic Transmitter/IEM Receiver (1G4: 1350 to 1525 MHz).
Each bidirectional Spectera SEK body pack manages both an IEM/IFB and a mic/line stream simultaneously.

Plus, they allow for full remote control and monitoring, via identical RF connection, of IEM volume, audio level and settings, RF health, battery status, and more via LinkDesk software. Variants include UHF (470–608 MHz and 630–698 MHz) or 1G4 (1350–1400 MHz and 1435–1525 MHz).

Spectera SEK body packs feature an impedance matching high-power headphone amplifier and offer up to seven hours of operating time depending on the selected Audio Link mode and settings with rechargeable lithium-ion battery BA 70.

Additional Features:

• Endless encoder and push button
• 3-pin mic/line input and IEM/IFB 3.5 mm headphone connector
• LED meter, status LED and persistent E-Ink display for “always on” information — name visible on screen even when batteries are removed
• Up to 7 hours of operating time depending on the selected audio link mode and settings with rechargeable lithium-ion battery BA 70 (sold separately)
• Encrypted RF connection between Base Station and bodypack
• Secure transmission of confidential content using AES 256 encryption
• Versatile charging options also available: L 70 USB, LM 6070 Module for L 6000 full rack charging station and charging contacts for in-device charging with CHG 70N-C
• Compatible with a wide range of Sennheiser lavalier and headset microphones with 3-pin locking connector and in-ear monitors with 3.5 mm connector
• Rugged metal housing