1. Introduction and Overview
The Western Rivers Mantis 50 is a compact, easy-to-use handheld electronic game call designed for predator hunting. This unit features a durable construction, preloaded realistic sounds, and a backlit LCD screen for operation in various lighting conditions. Its ergonomic design allows for convenient storage and portability.

Figure 1: Western Rivers Mantis 50 Electronic Game Call.
2. What's in the Box
Upon opening the package, verify that all components are present:
- Western Rivers ELECTRONIC HANDHELD WRC-GC50 Animal Call Unit
3. Setup
3.1 Battery Installation
- Locate the battery compartment on the unit.
- Open the battery compartment cover.
- Insert four (4) 'AAA' batteries (not included), ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
3.2 Positioning the Unit
The Mantis 50 features two pivoting legs. Extend these legs and lock them into position to stand the call unit upright on a flat surface, optimizing sound projection.

Figure 2: Key features of the Mantis 50, including pivoting legs and controls.
4. Operating Instructions
4.1 Power On/Off
Press and hold the power button to turn the unit on or off. The backlit LCD screen will illuminate upon activation.
4.2 Sound Selection
Use the 4-way keypad to navigate through the preloaded sounds displayed on the LCD screen. Press the appropriate button to select and activate a desired sound. The unit comes preloaded with popular sounds suitable for enticing various predators.
4.3 Backlit LCD Display
The LCD screen features a backlit display, enhancing visibility in low-light conditions. This allows for clear navigation and selection of sounds during dawn, dusk, or nighttime operations.
4.4 Random Repeat Timed Options
Utilize the random repeat timed options to introduce variation and realism into your calling sequence. Refer to the on-screen menu for specific settings and intervals.
4.5 Sound Activation Trigger Button
The unit includes a dedicated sound activation trigger button for immediate playback of the selected call.
4.6 Volume Control
The Mantis 50 is designed for optimal sound projection. Please note that this model does not feature an adjustable volume control button. The sound output is set to a fixed level.
Video 1: Overview of the Western Rivers Mantis 50 Compact Handheld Electronic Game Call by GSM LLC.
5. Maintenance
5.1 Cleaning
Wipe the unit with a soft, damp cloth to remove dirt and debris. Do not use harsh chemicals or abrasive cleaners. Ensure the unit is dry before storage.
5.2 Battery Care
Remove batteries if the unit will not be used for an extended period to prevent leakage and damage. Dispose of used batteries responsibly according to local regulations.
5.3 Storage
Store the Mantis 50 in a cool, dry place away from direct sunlight and extreme temperatures.
6. Troubleshooting
- Unit does not power on:
Ensure batteries are inserted correctly with proper polarity. Check if batteries are fresh and fully charged. - No sound output:
Verify that a sound has been selected and activated. Check for any obstructions in the speaker area. - LCD screen is dim or not visible:
Ensure batteries have sufficient power. The backlit display should activate automatically in low light. - Buttons are unresponsive:
Power cycle the unit by turning it off and then on again. If the issue persists, replace the batteries.
7. Specifications
| Feature | Detail |
|---|---|
| Model Name | WRC-GC50 |
| Brand Name | Western Rivers |
| Manufacturer | GSM LLC |
| Power Source | 4 'AAA' batteries (not included) |
| Item Weight | 0.28 kg |
| Item Dimensions (LxWxH) | 1 x 1 x 1 inches |
| Color | Tan |
| Material | Blend |
| Included Components | Western Rivers ELECTRONIC HANDHELD WRC-GC50 Animal call |
8. Warranty and Support
For warranty information and customer support, please contact the manufacturer, GSM LLC, directly. Refer to the product packaging or the manufacturer's official website for contact details.
