Made with precise stitching from finest quality material for Extra Durable and Strength.adjustable sport armband fit for people of different sizes,adjust the suitable length you want,and will not stretch out of shape .Can be Adjustable One Size Fits All for Men and also Women. | Lightweight and durable armband case get your player secure and protected,provides easy access to the functions and ports. | Adjustable stretchy Velcro armband protects and stabilizes cellphone without slipping or constricting, so you can exercise for hours with entertainment, stay connected and enjoy great comfort. Built-in hidden key holder to help you minimize carrying extra things when hitting the gym! | Bright reflective strip encircling your screen provide better visibility and keep you safer when you exercise at night.Comfortable:breathable neoprene material makes armband softable bring you comfortable wearing experience and easily to wiped clean. | Keeps your Apple iPOD Nano 4th Generation, CCHKFEI C8 C9 X06 , RUIZI X02 X20 X06, BENJIE k8 k9 MP3 MP4 Player secure and protected.Perfect for most sports activities like jogging, running, cross training, hiking, mountain biking, gym, horse riding etc.

🎼 [Bluetooth 5.0 Function] CCHKFEI B9 MP3 players can work wirelessly and wired. The Bluetooth system supports 2.0 to 5.0 and provides stable connections with devices such as Bluetooth speakers and Bluetooth headsets. You can enjoy music wirelessly at home or outdoors. (Note: ① Bluetooth cannot be connected to a mobile phone. ② The theoretical connection distance of Bluetooth is about 10 meters. Avoid where radio interference is concentrated and affects the connection.) | 🏃♂️ [Clip design & pedometer] Use a mini clip to insert CCHKFEI MP3 players into sportswear. The player weighs only 27 grams, and you can hardly feel even if you hang your clothes. In addition, you can track your exercise data in real time by providing a pedometer function. Ideal for sports and hiking.(Note: The default volume at the time of shipment is the maximum volume. It is recommended to adjust the volume before playing with earphones.) | 🎵 [FM radio and Hi-Fi sound quality] FM 87.5MHz to 108MHz. Players can listen to FM broadcasts using wired headphones. Supporting multiple audio formats: MP3 / WMA / WAV / OGG / AAC / ACELP / APE (8kHz-48kHz) / FLAC (8kHz-48kHz). Adopts digital noise reduction technology to maximize high sound quality from bass to high notes. Provides the SQ equalizer function and always adjust the environmental effects to experience the unparalleled music | 💾 [Built -in 32GB memory space] Up to 5,000 songs can be saved. Supports TF cards that can be expanded to 128 GB (not included). You can listen to up to 8000 songs. You can customize the playback mode and environmental effects in the folder to play your favorite songs. If you have any questions about music regeneration, please contact us as soon as possible. I will reply immediately | 🔋 [Battery life & multifunctional] About 1.5 hours (5V, 0.5-1A) can be charged for about 20 hours with wired headphones and about 6 hours in Bluetooth mode. The player also has a recording/e -book/image/calendar function. You can customize and adjust the shutdown settings, display settings, and button lights. Supports more than 30 countries and local languages