Model Number: CX200TW1 Operation confirmed. Purchased and used on September 22nd of this year. All accessories are included, including the original box. 【High Sound Quality】 Equipped with dynamic drivers that deliver Sennheiser's crystal-clear sound quality. You can enjoy music more deeply. 【Long Battery Life】 Boasts a maximum battery life of 27 hours, allowing for extended use. With the charging case, you can enjoy even longer listening sessions. 【Comfortable Fit】 Ergonomically designed for a comfortable fit, reducing fatigue even during long hours of use. - Brand: Sennheiser - Model Name: CX True Wireless - Color: White - Battery Life: Up to 27 hours - Features: BASS BOOST function - Accessories: Charging case, earphones Thank you for viewing.