Bluetooth Headphone Color:Black brown and gray Built-in memory (NAND or NOR):

Built-in memory (NAND or NOR): 32Mb SPI Flash

Material: Wood

Chinese (jian)

Sleeve length: multiple options are available

Bluetooth Headphone Color:Black brown and gray Built-in memory (NAND or NOR):Product information: Function: call function Channel: 2 Bluetooth version: 5. 0 How to use: head mounted Features: Music goggles four core selling points 1. Music playback 2. Bluetooth connection 3. Sleep aid 4. Breathable and comfortable Lunch break: Isolate glare and noise, listen to music for a while, feel comfortable Strong blackout, no ear pressure: immersed in a sea of music and sleep Wireless Bluetooth music eye mask: music + eye mask = good