The bluetooth-compatible earphone is lightweight and sweat-proof, which can give you comfortable and painless wearing feeling. Bluetooth 5.1 chip makes transmission non-delayed, stable and fast, which gives you high-quality sound effect. Made of ABS material, the bluetooth-compatible earphone is durable and environmental-friendly to use. The length of bluetooth-compatible earphone is 13cm and width is 10cm. The bluetooth-compatible earphone is compatible for connecting many devices in most cases. Item Name: bluetooth-compatible Earphone Material: ABS Model: G1-1 Bluetooth Version: 5.1 Sensitivity: 92dB Operation Mode: Button Battery Capacity: 150mAh(Included) Transmission Distance: Barrier-free 10m Features: Comfortable, Lightweight, Waterproof Size Details: 13cm x 10cm/5.12" x 3.94" (Approx.) Notes: Due to the light and the screen setting difference, the item's color may slightly differs from the pictures. Please allow slight dimension difference due to the manual measurement. Package Includes: 1 x bluetooth-compatible Earphone 1 x Charging Cable