**Specifications:**
**Upgrade Comparison:**
- **Version:** K38, K39, K40, K41
- **Features:** High-definition sound quality, automatic frequency tracking, long-distance range
- **Microphone Advantage:** Metal U-segment adjustable frequency, anti-interference, anti-howling
- **Battery:** Large capacity No. 5 batteries
- **Range:** ≥50m (K38), ≥60m (K39), ≥80m (K40), ≥100m (K41)
- **Additional Features:** Lithium rechargeable batteries, built-in receiver, anti-howling, clear sound quality
**SANSUI WK Brand Information:**
- Founded in 1978, specializing in audio technology
- Serving over 10,000,000 users globally as of August 1, 2022
- Commitment to quality and customer service
**Troubleshooting:**
- **Issues:** Fatigue from incorrect microphone selection, distortion, severe howling, noise interference
- **Solution:** SANSUI Wireless Microphone Series offers improved performance and high-fidelity sound quality
**Wireless Microphone Features:**
- Dynamic coil core for high-fidelity sound
- Intelligent noise reduction and anti-howling technology
- Rechargeable battery with anti-drop mesh cover
- Improved sound quality and noise reduction compared to previous models
**Compatibility:**
- Suitable for various devices including amplifiers, projectors, sound cards, buses, and more
- Easy connectivity with digital screens for visual frequency tracking
**Additional Details:**
- Metal anti-drop mesh cover for durability
- Clear digital display for battery, signal, and frequency information
- Ergonomic design for comfortable grip and versatile use
**Application:** Ideal for stage performances, karaoke, and other entertainment settings
**Frequency Range:** 655.0MHz, 48V, suitable for multiple users without interference
**Package Includes:** Wireless microphone, receiver with digital screen, and easy-to-use features
**Note:** Some devices may require a 3.5mm adapter for connectivity
**Brand Guarantee:** SANSUI ensures quality products with a focus on user experience and performance.
