Frequency response (Microphone) 150 Hz ÔÇô 11 kHz (Super wideband) 150 Hz ÔÇô 7.0 kHz (Wideband) 300 Hz ÔÇô 3.5 kHz (Narrowband) Master carton weight 10252 g / 361.6 oz Talk time Up to 12 hours (Density optimized wideband) Up to 9 hours (Super wideband) Up to 14 hours (Narrowband) Package dimensions (H x W x D) 172 x 172 x 122 mm / 6.77 x 6.77 x 4.80 in Frequency response (Headphones) 150 Hz ÔÇô 11.5 kHz (Super wideband) 150 Hz ÔÇô 6.8 kHz (Standard wideband and High density wideband) 300 Hz ÔÇô 3.5 kHz (Narrowband) 20 Hz ÔÇô 12 kHz (Ultra wideband - music mode) Standby time Up to 44 hours Temperature Range Operational: +5 ??C to + 45 ??C/+41 ??F to +113 ??F Storage: -20 ??C to + 70 ??C/-4 ??F to +158 ??F Package weight 859 g / 30.5 oz Unit pack/end user 1 Master carton dimensions (H x W x D) 810 x 450 x 180 mm / 31.89 x 17.71 x 7.09 in Charging time 0 - 100 %: 1.5 hours 0 - 50 %: 30 minutes Units in distributor master carton 8