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- TALK/STANDBY TIME: Up to 4.5 hours talk time and 7 days standby time on a single battery. Easily swap included battery while a call is in progress for unlimited talk time.- BLUETOOTH: Bluetooth 5.0 with BLE- AUDIO PROFILES: A2DP AVRCP HFP HSP- APTX CODECS: SBS CVSD mSBC- RANGE: 100 m (328 ft)- VOICE ALERTS: Enhanced voice alerts announce remaining talk time mute and connection status - LANGUAGES: US/UK English Spanish (LATAM) French Italian German Russian (Cyrillic) Mandarin Korean- MICROPHONE: Dual mic array with noise-canceling front mic- FREQUENCY RESPONSE: Wideband: 50 Hz�7 kHz; Multimedia 20 Hz�20 kHz- BATTERY CAPACITY:140 mAh- BATTERY TYPE: Rechargeable replaceable lithium-ion polymer- CHARGE TIME: Three hours- MULTIPOINT TECHNOLOGY: Yes- WEIGHT: 21 gms - APPLICATIONS: Plantronics hub desktop version is available for Windows/Mac mobile version offered on Android and iOS Plantronics Manager Pro suites: Asset Management & Adoption Call - Quality & Analytics Health & Safety Amazon Alexa (easy access) TILE (lost headset location)

- Leatherette Ear Cushion- Works with the following products:- SupraPlus- SupraPlus SL- SupraPlus Wireless- SupraPlus Wideband- SupraPlus UNC

Training Y-Connector allows two headsets to be connected to a single headset adapter allowing trainers and supervisors to monitor agents calls.

- Line In Use Indicator For CS-50- Lets others know when you are on the phone- Works with: CS70N CS50 CS55 SupraPlus Wireless

- Includes voice tube cord clip 2 ear cushions background noise suppressor and 3 cleaning towelettes- Works with SupraPlus SL and SupraPlus Wideband

- Up to 10 hours of continuous talk time.- Charge one battery while remaining hands-free and mobile with another- Genuine Poly battery

- Spare ear cushion large leatherette HW

- Electronic Hook Switch Cable for remote desk phone call control (answer/end)

Unique boom designNylon composite materialsStreamlined inventory managementPremium audio experienceNoise cancellingReinforced headbandMonaural over the head wearing stylesIntuitive controls

- Electronic Hook Switch Cable for remote desk phone call control (answer/end). This cable eliminates the need for an HL10 Handset Lifter.- This cable works with NEC desk phones