Specifications:
Microphone concept:
Directivity: HD Omni-Directional microphone
Microphone Sensitivity & Impedance: –29 dB +/- 2 dB (1kHz, 0db=1V/Pa), Max 9.1 kΩ
Digital Signal Processing: Up to 21 dB noise reduction on transmit signal, acoustic echo cancellation
Speaker size: Ø 40 mm x 8 mm
Speaker impedance: 93 db +/-3 dB (0.1 W / 0.1 M), 4Ω +/- 15%

Bluetooth standard: Bluetooth 3.0
Bluetooth profiles: A2DP (v1.2), Hands Free Profile (v1.6), Headset profile (v1.2), phone book access profile (v1.0)
Security: 128 bit Encryption
Operating range: Up to 10 meters (33 feet)
Paired devices: Up to 8 devices
Multi connect: 2 devices can be connected at a time

Battery: Internal rechargeable 950mA Li-Polymer battery
Talk time: Up to 20 hours
Standby time: Up to 60 days
Charging time: Approximately 2.5 hours
Charging plug: Micro USB

Weight: 135 grams (4.76 oz)
Dimensions (L x W x D): 102.3 x 82.7 x 32.6 mm (4 x 3.25 x 1.28 in)
What's in the box: Jabra Tour in-car speakerphone - Car charger - USB cable - Quick Start Guide - Warning/warranty leaflet