The sound of your voice. The WMS 40 PRO presenter set will get your speech across perfectly. The inconspicuous CK 55 L lavalier microphone is easy to attach.
Easy to hide in the user's clothes, the WMS 40 PRO presenter sets provide optimum intelligibility for actors, presenters, or moderators.
Ease of use lets you focus on what you have to say.
The transmitter operates for 30 hours off a single AA size battery.
Includes power supply, AA battery, labeling sheet, and mic clip.
SR 40 FLEXX Features
Three selectable UHF frequencies for interference-free reception.
Diversity: maximum transmission reliability even in difficult environments. The system automatically selects the antenna providing the best signal.
Adjustable squelch
Multichannel capability for simultaneous use of up to nine channels (maximum number of channel depends on local frequency plans).
All-metal case
High Definition Audio Performance technology ensures the legendary, realistic AKG sound and perfect audio transmission.
PT 40 FLEXX Features
Three selectable UHF frequencies for interference-free reception.
Multichannel capability for simultaneous use of up to nine channels (maximum number of channel depends on local frequency plans).
High Definition Audio Performance technology ensures the legendary, realistic AKG sound and perfect audio transmission.
Transmitter operates for at least 30 hours off a single AA size battery, saving cost, maximizing dependability, and minimizing onstage stress.
CK 55 L Features
Low-profile, cost efficient clip-on microphone for applications including houses of worship, lecturers, etc. Connects to AKG bodypack transmitters.
The CK 55 L provides a natural sound, with a slight rise above 10 kHz for added clarity. Its cardioid polar pattern and bass rolloff combine to suppress unwanted ambient noise.
Inconspicuous clip-on microphone
Natural, airy sound
High ambient noise rejection
Technical Info
Channel Frequencies
Channel 40A: US45
A1: 660.700 MHz
A2: 661.100 MHz
A3: 662.300 MHz
Channel 40B: US58
B1: 734.600 MHz
B2: 736.025 MHz
B3: 736.975 MHz
Channel 40C: US60
C1: 748.875 MHz
C2: 750.900 MHz
C3: 751.550 MHz
SR 40 FLEXX
Carrier frequency range: 660 to 865 MHz, 3 selectable frequencies
Modulation: FM
Audio bandwidth: 35 Hz to 20 kHz
THD: typical 0.8 % (at 1 kHz)
Signal/noise ratio: typical 110 dB(A)
Power supply: 120/230 V AC
Audio outputs: bal. XLR and unbal. 1/4 in. jack, output level adjustable, at rated deviation: 500 mV rms.
Dimensions: 200 x 190 x 44 mm (7.8 x 7.4 x 1.7 in.)
Net weight: 665 g (1.5 lbs.)
PT 40 FLEXX
Carrier frequency range: 660 to 865 MHz, 3 selectable frequencies
Modulation: FM
Audio bandwidth: 35 Hz to 20 kHz
THD: typical 0.8 % (at 1 kHz)
Signal/noise ratio: typical 110 dB(A)
Power supply: 1 AA size battery
RF output: typical 10 mW (ERP)
Battery life: typical 30 h (for 2200 mAh)
Dimensions: 60 x 74 x 30 mm (2.4 x 2.9 x 1.2 in.)
Net weight: 60 g (2.1 oz.)
CK 55 L
Polar pattern: cardioid
Frequency range: 15 to 18,000 Hz
Sensitivity: 8.8 mV/Pa (-41 dBV)
Max. SPL: 118 dB (k=1 %)
Equivalent noise level: 34 dB-A
Signal/noise: 60 dB
Impedance: 200 ohms
Recommended load impedance: >2000 ohms
Supply voltage: 1.5 to 10 VDC or 9 to 52 V phantom power to DIN/IEC using MPA III L
Current consumption: <2 mA
Connector: 3-pin mini XLR
Cable: 1.6 m (5 ft. 4 in.)
Finish: matte black
Dimensions: 8 x 23 mm (0.3 x 0.9 in.)
Net weight: 2.5 g (0.08 oz.)
Shipping weight: 115 g (4 oz.)
4 payments of 
Personal use items that are used at your mouth or in your ear cannot be returned once opened due to health laws. This includes all microphones, guitar talk boxes, ear plugs, and in-ear earphones. 
