The Poly SAVI 8240 OFFICE is a Convertible DECT Headset that offers connectivity to PC/Softphones via USB, Mobile phones via Bluetooth and Desk phones via RJ-11 telephone Cable. Keep your conversations secure with DECT 6.0 technology while enjoying crystal clear Wideband audio. Choose a wearing style that suits you, the Poly SAVI 8240 OFFICE Convertible comes with 3 wearing options: Headband / Neckband / Ear-Hook. The Poly SAVI 8240 OFFICE offers up to 7 hours talk time and fully charges within 3 hours. The extensive wireless DECT range covers up to 55m meters in typical office environments. Features: Wireless DECT Headset Crystal Clear Calls 210979-02 Specifications: Dimensions: H:14.0 x W:18.0 x D:18.0 cm Colour: Black Guarantee:2 years Material: Plastic Model Number: 100009529