This environmentally sound Bluetooth Car Kit boasts150 hours of standby time and 6 hours of talk time, great for all of you yappers out there. Clip the NXBT-002 to your sun visor while your out cruising around town for hands-free enabled conversations. When you need some power, fix it to your windshield and it'll soak up the energy of the sun or use the included car charger. Phone numbers of incoming calls are displayed for your convenience and you can store up to 200 telephone numbers for quick call action. Full duplex DSP technology for echo cancellation and noise reduction so all of your conversations are crystal clear!