Bluetooth 5.0 compatible hands-free wireless headset, 150 hours talk time. - Model Name: TBM27W - Bluetooth Version: 5.0 - Wireless Function: Hands-free - Talk Time: 150 hours - Charging Time: 5.5 hours - Standby Time: 4.0 hours Thank you for viewing. This was included in a lucky bag from an electronics store a few years ago. The box is a little dirty, but it's unopened. Thank you.