Type: True Wireless Bluetooth Headphones Chip: JL6973D4 Model Name: TF-31 Headphone: 3.7V/30mAh Built-in Battery Charging compartment: 3.7V/300mAh Bluetooth version: Bluetooth 5.4 Bluetooth transmission distance: 26-32 FT Frequency response range: 20Hz-20KHz Speaker impedance : 32Ω Sensitivity: 109dB±3dB Charging port : Type-C Charging time: Approximately 1.5 hours Battery Talk/Music Time： 5 hours Transformers TF-T31 Bluetooth 5.4 TWS Wireless Earbuds with Mechanical Shell Design Passive Noise Cancelling Semi-In-Ear Cool HiFi HD Calling Music Game Modes Low Latency Sports Earphones Experience next-level audio performance with the Transformers TF-T31 Mechanical Shell Design Wireless Earphones, engineered for both gaming and music enthusiasts. Featuring the latest Bluetooth 5.4 technology, these earbuds deliver a fast, stable connection and exceptional sound clarity for immersive entertainment anywhere you go. With dual mode functionality, switch effortlessly between Gaming Mode for ultra-low latency audio synchronization and Music Mode for rich HiFi sound with deep bass and crystal-clear highs. Perfect for intense gaming sessions or enjoying your favorite tracks without compromise. The lightweight, ergonomic design ensures a comfortable fit for extended wear, while the touch controls make operation simple and intuitive. The sleek, Transformers-inspired charging case not only protects your earbuds but also provides extended battery life, ensuring your music and gameplay never stop. LED Digital Display & Long Battery Life: Stay informed with the LED digital display that shows the real-time battery status of your wireless earbuds and charging case. Enjoy up to 5 hours of continuous playback on a single charge, extended to an impressive 50 hours with the case Immersive Sound & ENC Call Clarity: Bluetooth-enabled gym headphones with 13mm magnetically levitated drivers deliver rich, detailed audio across all frequencies. Advanced ENC technology reduces ambient noise for crystal-clear calls Key Features: Bluetooth 5.4 – Stable, fast connection with low power consumption Dual Mode – Gaming Mode for low latency / Music Mode for HiFi sound HiFi Audio – Deep bass, clear mids, and crisp highs Touch Controls – Easy access to calls, music, and mode switching Long Battery Life – All-day use with charging case support Ergonomic Fit – Lightweight, comfortable, and secure for extended wear Stylish Design – Transformers-themed aesthetics for fans and collectors