Item Type: BT HeadsetMaterial: ABS, PU LeatherModel: B39BT Version: V5.0 and EDRFrequency Response Range: 20Hz-20KHzSpeaker: Approx. 40mm/1.5inImpedance: 32Noise Reduction: CVC6.0Card Play: Support to play songs in external Memory CardBattery Type: 400mAh Li Ion Battery (Built in)Package List1 x BT Headset1 x Sound Cable1 x Charging Cable1 x Manual1[40mm Speaker Unit] BT headset is equipped with a 40mm moving coil unit, with strong and clear bass, like being on the scene, lifelike sound, and presenting a different listening experience. 2[Stable Performance] The headset adopts the new 5.0 BT chip, which has high performance, high sound quality, low power consumption, high stability, and is more convenient to use wirelessly. 3[Comfortable] PU leather earmuffs of the BT headphone do not clip ears, the large ear shells are designed to wrap your ears, the noise reduction effect is better, and more comfortable to wear. 4[Foldable] The wireless earphone headband is adjustable and retractable, suitable for different people and head shapes, foldable and more convenient to carry. The perfect gift for kids. 5[Stylish] Over ear headphone with colorful breathing light design, stylish and cool, enhance your gaming, music experience, compatible with mobile phones, laptops, tablets, etc.