The Sound ID 400 Bluetooth headset will target those who are still looking for a Bluetooth headset to go along with their cellphone, where the ID 400 boasts a PersonalSound feature that offers a trio of listening modes that have been tuned to common hearing preferences, helping speeches made over the headset to be enhanced without the need to increase the volume. When you turn Environmental Mode on, the user will be able to hear out of both ears even when wearing the Sound ID 400 – perfect for those who perform exercises outdoors and don’t want to run the risk of being run down by a vehicle behind just because Linkin’ Park is on at full blast. The Sound ID 400 will ship this Q4 for $129.99.