Steering wheel bluetooth car kit with voice dialin

Steering wheel bluetooth mobile handsfree car kit 1. Features: Excellent sound quality with D.S.P solution for echo cancellation & noise suppression (CVC technology). Voice dialing function Answer and End a Call Reject a Call Redial the last number Built-in Speaker Built-in Microphone +and "-" to adjust volume Full Duplex Noise& Echo Suppression Wind noise suppression Bluetooth AFH support Built-in Li-ion battery Low active and stand-by power consumption 2. Specifications: Bluetooth Version:2.1+EDR Frequency Range:2.4GHZ Spectrum Connection distance: 0 10M Microphone effective range:0 1M Charger Input Voltage:DC12V-24V Li-Battery capability:220mAH Standby Current:0.3mA Standby time: More than 15 days Dimensions:81(L)*57(W)*28(H) mm Weight:50g Operating temperate:-10 70 degrees Storing temperate: -20 80 degrees Packing: N.W./PC: 0.05KG G.W./PC: 0.15KG Box size: 22.8x15x4cm Carton size: 66 (L)*41 (W)*51 (H) CM N.W.: 14KGS/CTN G.W.: 15.5KGS/CTN Dimension weight: 29kgs/ctn 100PCS/CTN