Wireless headset supporting HD Voice, offering 23 hours of talk time and 13 days of standby time. Functionality confirmed. However, the degree of battery consumption is unknown. Accessories are as shown in the images. - Brand: KENWOOD - Model: KH-M300-B - Features: HD Voice - Bluetooth: Supported - Talk Time: 23 hours - Standby Time: 13 days Thank you for viewing.