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Lifebee J399 Earbuds
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Built for active lifestyles, the LIFEBEE J399 Wireless Sports Earbuds combine powerful sound, a secure fit, and reliable performance for workouts and outdoor activities. Featuring 13mm drivers and Bluetooth 5.3, the J399 delivers clear, immersive audio with a stable wireless connection, while built-in microphones with ENC help provide clearer hands-free calls. The ergonomic ear-hook design keeps the earbuds securely in place during movement, and the IPX7 waterproof rating provides added protection against sweat and water. With up to 6 hours of playback on a single charge and up to 27 hours with the 400mAh charging case, plus a convenient dual LED digital display and USB-C charging, the J399 is ready for running, training, hiking, cycling, and everyday listening.
Product Type: Wireless Sports Earbuds / TWS
Wearing Style: In-Ear + Ear-Hook
Bluetooth Version: Bluetooth 5.3
Connectivity: Bluetooth / TWS
Wireless Range: Up to 10 m
Driver Size: 13 mm
Frequency Response: 20 Hz – 20 kHz
Microphone: Built-in Omnidirectional Microphones
Microphone Noise Cancellation: ENC
Audio Codecs: SBC / AAC
Earbud Battery Capacity: 35 mAh × 2
Charging Case Capacity: 400 mAh
Earbud Playback Time: Up to 6 Hours
Total Playback Time: Up to 27 Hours
Charging Time: Less Than 2 Hours
Charging Port: USB Type-C
Charging Case Display: Dual LED Digital Display
Waterproof Rating: IPX7
Controls: Touch Controls
Voice Assistant: Supported
Single Earbud Use: Supported
Design Features: Ergonomic Ear-Hook / Secure Fit
Compatible Devices: iOS / Android / PC / Tablet
Use Scenarios: Running / Sports / Workout / Hiking / Cycling / Outdoor Activities / Daily Use