B39 Light-emitting Ear Headset Folding Wireless Plug-in Card Subwoofer Bluetooth Headset Features: 【Foldable & Stretchable】Headphones feature a on-ear foldable design, space when on storage.Built-in 400mAh rechargeable battery can realize about 7 hours of playing with LED lights. 【Comfortable】The headband with soft cushion and pressure-relieving ear pads to ensure long-wearing comfortable without stress, suitable for people with different ages. 【Cute Ear】Bluetooth headphones features with a lovely ear design and fancy LED lights. The wireless headphone designed with unique color, for kids and adults wearing. 【Virtual Surround Sound, Clear Bit Recognition】 An all-around immersive experience, which enables the built-in 7.1 virtual surround sound effect by driving, provides a powerful positioning effect and excellent degree of restitution, and keeps the sound of gunfire and footsteps in a clear and balanced way, and every move. 【Good gift】Perfect Christmas/Valentine's Day/Birthday family and, suitable for office work/sport/school/traveling, etc. Product Description: Product parameters: Wearing mode: folding Bluetooth version: Bluetooth 5.0+EDR Support Bluetooth profiles: A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5 Battery: 400 mah Horn: 40mm/32 Ω Transmission range: ≤ 10M Plug in card playing: supports playing songs in the external . Indicator light: the red and blue lights flash when the machine is , the blue lights flash when the machine is connected, and the red lights for charging are fully charged and off. Headset charging: rechargeable 3.7V/400MAH polymer A lithium battery with overcharge and overdischarge protection. Charging port: USB charging port Normal charging time: about 2 hours Music playback time: Call duration: ≤ 6 hours Standby time: 200 hours gross weight: 275g Package size: 13 * 19 * 8.5cm Packing list: 1x Headphones 1x Instructions 1x charging cable