The headphones are equipped with bone conduction technology, which reduces the pressure on the ears and makes them comfortable to wear. These headphones can play for a long time, about 13 hours, thanks to the high-performance, large-capacity battery. Made of high-quality ABS material, this product is lightweight and durable to use. The length of the product is 14cm, the width is 9cm and the height is 4cm. It is suitable for any Bluetooth-compatible devices such as mobile phones, tablets and so on. Item Name: Wireless Headphones Material: ABS Battery: Built-in 170mAh Rechargeable Battery (Included) Bluetooth-compatible Version: 5.2 Music Time: 13H Call Time: 15H Connection Distance: 10 Meters Supported Protocols: HSP/HFP/A2DP/AVRCP Horn Material: Dual Composite Diaphragm Horn Features: Bone Conduction, Low Latency, Clear Sound Size Details: 14cm x 9cm x 4cm/5.51\" x 3.54\" x 1.57\" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Wireless Headphones 1 x USB Cable 1 x User Manual