Sennheiser Wireless Handheld Lavalier Microphone System

The Sennheiser 509745 is a wireless microphone system that gives performers and presenters the freedom to move while keeping audio clear and consistent. It brings together everything you need to handle vocals, spoken word, or instruments on a single stage.

Inside the box you will find three core elements. First is the e 835 microphone, a handheld model that uses dynamic capsule design for solid vocal presence and feedback resistance. Second is the SK 100 G4 bodypack transmitter, ready to pair with the included ME 2-II lavalier mic so you can clip audio directly to clothing when you prefer a hands-free setup. Completing the package is a half-rack receiver built in durable metal with true diversity circuitry that minimizes dropouts. An intuitive LCD screen lets you monitor levels, frequencies, and battery status at a glance.

Setup takes only moments. Press one button to sync the transmitter and receiver through infrared, choose from 1,680 UHF frequencies spread across 42 MHz of bandwidth, and you are on the air. The system keeps a stable link at distances up to 100 meters and can run as long as eight hours on standard AA batteries. If you manage multiple channels, quick frequency allocation lets you coordinate up to twelve systems in the same space without clashes.

On a live music stage, singers can switch between the handheld mic for expressive performances and the lavalier when they need both hands free. Corporate presenters will appreciate the discreet clip-on option during keynote sessions. Worship teams, video crews, and theater groups can rely on the long range and robust metal receiver for weekly use.

Whether you tour nationally or handle local events, the 509745 system offers the flexibility to cover different roles with one reliable toolkit, all backed by the sound quality that has made Sennheiser a familiar name in venues around the world.

Highlights:

• e 835 microphone that is handheld and dynamic
• ME 2-II lavalier mic with an omnidirectional pick-up pattern
• SK 100 G4 bodypack transmitter pairs with lavalier or instrument cables
• Half-rack receiver built in metal and using true diversity reception
• 42 MHz tuning bandwidth with 1,680 selectable UHF frequencies
• Dependable audio link up to 100 meters
• Infrared sync for fast transmitter and receiver pairing
• Frequency coordination for as many as 12 linked systems
• 20 channels can operate together in optimal conditions
• Up to 8-hour runtime on standard AA batteries