Product details of Jabra Talk 45 Wireless Mono Bluetooth Headset - Black 

✅Enjoy the Clearest conversations on both ends of your call with HD voice and 2-microphone noise cancellation technology that adjusts the volume to your environment
✅A dedicated button for Siri and Google assistant lets you stay connected to digital assistants, even when your phone is in your pocket or bag
✅Stream music, podcasts and GPS directions
✅Choose your preferred wearing style and, with the ultimate comfort eargels that come in many sizes and mold to your ear, you have a custom fit for all-day comfort
✅With up to 6 hours of battery on a single charge 

Specifications

Audio
Microphone type 2 x omnidirectional ECM
Speaker 11 mm dynamic speaker
Microphone frequency range 100Hz to 8kHz
Microphone sensitivity -40 dBV/Pa
Speaker frequency range 200Hz to 8kHz
Ease of use
Paired devices Up to 8, connected to two at the same time (MultiUse™)
Wearing style In-ear wearing style
App. support Jabra Assist app.
Battery
Talk time Up to 6 hours
Charging time Approximately 2 hours
Standby time Up to 8 days
Connectivity
Bluetooth® compliance Bluetooth® 4.0
Wireless range Up to 98 feet / 30 meters
Bluetooth pairing list Up to 8 devices
General
Headset dimensions (L x W x H) 57.4 x 15.4 x 24.2 mm (2.26 x 0.61 x 0.95 in)
Box content Jabra Talk 45 headset - Micro USB cable - 3 eargels - 2 earhook - Quick Start Guide - Warranty and Warning leaflets
Headset weight 7.2 grams (0.25 oz) 
Operating Temperature 0° to + 45° C (32° F to 113° F)