Description: It has a V5.1 upgrade chip, which makes the transmission more stable, the connection easier, and the conversation and listening to music are more unobstructed. It is designed for moving coil unit that the audio can be analyzed well and the details are not distorted. The earphone has a built-in high-sensitivity touch panel, which can be intelligently identified with a light touch, and various operations can be completed quickly. And built-in large-capacity battery makes the battery life is long. Made of ABS material, the wireless earphone is reliable and durable. The length of the product is 8.8cm, the width is 5.5cm and the height is 2.7cm. It is suitable for you to use it for home, office, travel, sport, etc. Item Name: Earphone Material: ABS Horn Specifications: 13mm Dynamic Speaker Earphone Battery Capacity: 40mAh Bluetooth-compatible Version: 5.1 Transmission Distance: 10m Frequency Response: 20-2K HZ Battery Capacity: 2000mAh Compatible Models: for IOS, for Android, for Windows Size Details: Size: 8.8cm x 5.5cm x 2.7cm/3.5" x 2.2" x 1.1" (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 Earphone Box 2 x Earphones 1 x Charging Cable 1 x User Manual It has a V5.1 upgrade chip, which makes the transmission more stable, the connection easier, and the conversation and listening to music are more unobstructed. It is designed for moving coil unit that the audio can be analyzed well and the details are not distorted. The earphone has a built-in high-sensitivity touch panel, which can be intelligently identified with a light touch, and various operations can be completed quickly. And built-in large-capacity battery makes the battery life is long. Made of ABS material, the wireless earphone is reliable and durable. The length of the product is 8.8cm, the width is 5.5cm and the height is 2.7cm. It is suitable for you to use it for home, office, travel, sport, etc.