Bluetooth wireless earphones, Dolby Atmos optimized, Hi-Res Audio compatible. - Brand: Technics - Model Name: AZ100 - Features: Bluetooth compatible - Optimization: Dolby Atmos, LDAC - Other Features: Hi-Res Audio compatible This product is unopened, so returns and refunds are not accepted except for initial defects. For initial defects, please contact the manufacturer. Although handled with care, this item has been in someone's possession, so there may be some scratches or marks on the outer box. Please understand this before purchasing. Wireless Stereo In-Ear Headphones EAH-AZ100-S Silver Brand: Technics Wearing Style: Separate left and right, completely independent Earphone/Headphone Type: Canal type Color: Silver Wireless/Wired Connection: Wireless Earphone/Headphone Features: Noise canceling, Hi-Res, Microphone, Sound quality adjustment, Waterproof, Splashproof, Remote control Wireless Standard: Bluetooth Drive System: Dynamic type Driver Size (mm): 10.0 mm Charging Port: USB Type-C, Qi standard Charging Time: 2.0 hours Weight (g): 11.8 g