Plantronics CS50 Wireless Headset
The Plantronics CS50 is our foundational DECT wireless headset, designed for professionals who need reliable hands-free calling at their desk. The convertible design lets you wear it over the ear or over the head, and the lightweight build keeps you comfortable through back-to-back calls.
With one-touch call answer/end, volume control, and mute directly on the headset, you stay in control without reaching for your desk phone. The charging base provides up to 10 hours of talk time on a single charge, and DECT 6.0 technology delivers clear audio with minimal interference from Wi-Fi networks or other office equipment.
- DECT 6.0 wireless technology for interference-free audio
- Convertible wearing style – over-the-ear or over-the-head configuration
- Up to 10 hours of talk time per charge
- One-touch call answer/end, volume, and mute controls on headset
- Lightweight design at 21 grams (headset only)
DECT 6.0 wireless clarity
The CS50 uses DECT 6.0 wireless technology, operating on the 1.9 GHz frequency band to avoid interference from Wi-Fi routers, Bluetooth devices, and microwave ovens. This dedicated frequency range delivers consistently clear audio for voice calls, even in busy office environments with multiple wireless networks.
DECT (Digital Enhanced Cordless Telecommunications) is a global standard for wireless telephony, and the 6.0 iteration offers improved battery efficiency and range compared to earlier DECT versions. You get up to 300 feet of roaming range from the charging base in a typical office layout, so you can step away from your desk to grab files or refill your coffee without dropping the call.
Convertible wearing style
The CS50 ships with both an over-the-ear hook and an over-the-head band, and you can swap between them in seconds without tools. The over-the-ear configuration keeps your hairstyle intact and works well if you wear glasses, while the over-the-head band distributes weight across the top of your head for all-day stability during long conference calls.
The earpiece rotates 180 degrees, so you can wear the headset on either your left or right ear. The foam ear cushion is replaceable – we recommend swapping it every 6-12 months if you use the headset daily to maintain comfort and hygiene.
Battery life and charging
A full charge takes approximately 3 hours and delivers up to 10 hours of continuous talk time. The charging base includes LED indicators: solid red while charging, solid green when the headset is fully charged and seated in the cradle.
If you forget to dock the headset overnight, the low-battery warning tone gives you about 10 minutes of talk time before the headset powers off. The lithium-ion battery is user-replaceable – typical battery lifespan is 500-700 charge cycles, which translates to 1-2 years of daily use depending on call volume.
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Common questions about the CS50 headset
The CS50 offers up to 300 feet of wireless range in a typical office environment with standard drywall construction. Range can be shorter if you have concrete walls, metal filing cabinets, or other dense materials between the headset and the charging base.
You’ll hear a warning tone when you reach the edge of the wireless range, giving you time to walk back toward the base before the call drops.
No, the CS50 is designed exclusively for desk phones and does not connect to computers via USB or Bluetooth. If you need a headset for both desk phone and computer softphone use, consider our Savi series, which supports multiple connection types simultaneously.
The CS50 uses DECT wireless technology, which operates independently of your computer’s audio system.
The CS50 emits a repeating low-battery warning tone in your ear when approximately 10 minutes of talk time remain. This gives you enough time to wrap up your current call and dock the headset for charging.
If you continue using the headset without charging, it will power off automatically to protect the battery from over-discharge.
Yes, the CS50 is hearing-aid compatible and meets FCC regulations for magnetic coupling with telecoil-equipped hearing aids. The headset does not create significant electromagnetic interference that would cause buzzing or static in most hearing aids.
If you use a behind-the-ear hearing aid, the over-the-head wearing style may be more comfortable than the ear hook configuration.
Yes, the battery is user-replaceable and does not require tools. You remove the ear cushion, slide off the battery door on the headset body, and swap in a new lithium-ion battery pack.
Replacement batteries are available directly from our accessories shop. Typical battery lifespan is 1-2 years with daily charging.
The CS50 base unit connects to a single phone line at a time. If your desk phone has multiple lines, you can answer calls on any line, but you’ll need to manually select the active line on the phone itself before pressing the call-answer button on the headset.
The headset does not automatically switch between lines or allow you to place one line on hold while answering another.
The CS540 is a newer model with extended wireless range up to 350 feet, three wearing-style options instead of two, and a more compact charging base. Both headsets use DECT 6.0 technology and offer similar battery life and audio quality.
The CS50 remains a reliable choice if you prefer the original convertible design and don’t need the additional features of the CS540.