Oppo A57

Bluetooth 5.3 Technology and One-step Pairing: Wireless earbuds adopt the advanced bluetooth 5.3 technology, you can get 3X fast transfer speed (80% higher than the previous generation) and a more stable connection, almost no delay. Whether you are at home, in the office, or on the go, don’t worry about Bluetooth getting disconnected. After the first connection, these bluetooth headphones will automatically connect to your device as soon as you open the charging case.
High-fidelity Audio and ENC Noise Reduction: The wireless earphones are equipped with 13mm vibrating diaphragm speakers and HD rendering technology which can provide a powerful deep bass ( lowest 20Hz)and crystal-clear high sound quality(up to 20kHz). Noise cancelling earbuds adopt ENC noise-canceling tech that effectively separates your voice from the ambient sound, and makes
Comfortable Fit, IP7 Waterproof: Each ear buds wireless earbuds weighs only 3.3g, the ultra-light and ergonomic design allows you to wear them for a long time without feeling uncomfortable. The wireless earbuds bluetooth are waterproof with an IP7 nano-coating to protect them when sweating or getting wet. These sports earbuds are perfect for listening to music while fitness and traveling.

Bluetooth 5.3 and One-Step Auto Pairing: Csasan wireless earbuds adopt the most advanced bluetooth 5.3 technology, providing you with 2X faster transfer speeds (80% higher than the previous generation) and a more stable connection, with almost no delay. Whether you’re making calls or sports, there’s no need to worry about signal interruption. Once the bluetooth earphones are connected for the first time, simply open the charging case and the ear buds will automatically connect to your phone.
Immersive Sound and ENC Noise Cancelling Mics: These wireless earphones adopt a unique stereo design with 13mm big composite diaphragms and AAC codec to produce professional-grade sound. The bluetooth headphones are equipped with ENC noise reduction double mics to passively cancel 80% of background noise, allowing you and the caller to hear each other better and make crystal-clear calls with minimal background noise.
40 Hours Playtime and LED Display: These bluetooth earbuds provide up to 6-8 hours of high-quality sound output on a single 1.5-hour charge, and the included charging case provides an additional 4 charges, giving a total playtime of 40 hours. They feature a smart LED digital display, allowing you to easily monitor the battery consumption of both the wireless ear buds and the charging case so you can know when to charge them. You’ll never have to worry about battery life even on long trips.

2023 Latest Bluetooth 5.3 Technology and Stable Connection: The bluetooth earbuds are equipped with the latest Bluetooth 5.3 chip, supports A2DP, AVCTP, AVRCP, AVDTP, HFP and SPP Protocol, which provides faster transmission speed, stronger connection stability and longer range of bluetooth(Up to 15m). You will experience a smoother and clearer music playback and conversations than ever with no more worries about signal loss or music dropouts. Rid of cord, enjoy true wireless.
Mini Ultra Lightweight and Ergonomic Design: The in ear headphones are small, ultra-light and comfortable. The size of the charging case is 6.1*4.8*2.3 cm, 33g. Equipped with 3 different sizes ear tips (S/M/L) giving you more choices. Each earphone weighs only 4g, the ultra-light and ergonomic design allows you to wear them for a long time without feeling uncomfortable. Such a light weight will even make you ignore the earphones in your ears.
Premium Deep Bass Stereo Sound and Crystal Clear Call: The headphones wireless is equipped with a 13mm aperture driver, and adopts AAC/SBC audio coding technology and a unique stereo design to make the bass more powerful and the midrange full and textured. The built-in mic in each earbuds utilizes call noise cancellation to ensure clear and realistic sound. It will allow you to enjoy high-quality conversations anytime, anywhere. Make your lifestyle cool with these Noise Cancelling headphones.

Universal Compatibility: Rekavin Multi USB C Plug fast Charge supports Power Delivery 3.0/2.0 and QC 3.0/2.0.With USB C to lightning cable can quick charge for iPhone 14/14 Pro/14 Pro Max/13/13 Pro/13 Pro Max/12/12 Pro/12 Pro Max/12 Mini/SE 2020/11/11 Pro/11 Pro Max/XR/XS/X/8/7 iPad Air 2020 etc .And with USB C to C cable support Fast charge Samsung Galaxy S20 S10 Plus S9 S8 S7 A20s A21s A41 A50 A51(5G) A60 Note9 Xiaomi Redmi Note8 etc
Power 20W Fast Charging: Rekavin 20W USBC charger plug can provide a much more faster charging speed for your iPhone and ipad, Such iPhone 14 can be charged from 0% to 54% in only 30 minutes, 4 times faster than traditional 5W/1A adapter (Not Included Cable).
Smart IC Technology: This Dual port USB A and USB C plug built-in intelligent IC can auto-detect devices connected in each port while also identifying the appropriate current to charge each of your device optimally at their fully intended speeds up to a total of 3A and guarantee your devices are charging at their maximum speed, the sophisticated protection measures to ensure safety for you and your device(It become ordinary charging when two devices are charged at the same time).