Plantronics Discovery 925 Bluetooth Earpiece - BLACK - NO Charging Case - Bulk Packaging Lightweight VFrame design for outstanding comfort and elegant looks Up to 5 hours continuous talk time, 7 days standby from single charge. AudioIQ adaptive noise reduction for enhanced call clarity on both ends AudioIQ adaptive noise control reduces background noise; range of up to 33 feet Measures 2.7 x 1.0 x 0.9 inches; weighs 0.3 ounces;