Motorola 89420n Command One Bluetooth Headset Dual microphone technology cancel background noise (CELLULAR OTHER) CrystalTalk Dual Microphone Technology Listen and dictate text messages with MotoSpeak application (requires Android 2.2 smartphone) Listen to music and navigation with embedded A2DP Bluetooth profile Up to 5 hours of talk time, up to 168 hours (7 days) of standby time May be shipped with bulk packaging