Technical Specification:

Model: JR-TL1 Pro
Type: in-ear
BT version: 5.1
Supported protocols: HSP/HFP/A2DP/AVRCP
Audio decoding: AAC/SBC
Speaker sensitivity: 99.5dB±3
Frequency response range: 20Hz-20KHz
Impedance: 32Ω
Max power of earbuds: 3mW
Speaker: Φ6mm
Music time: about 8h (80% volume)
Talk time: about 6h (80% volume)
Case standby time: over 6 months
Charging input: DC 5V/1A
Earbud battery capacity: 50mAh
Case battery capacity: 300mAh
Cycle counts: 2.5 times
Earbud charging time: 1.5h
Case recharging time: 1.5h
Charging port: Type-C
Waterproof rating: IPX7
Size of charging case: 64.9*30*30
Material: ABS 

Features:

Up to 8 hours of battery life on one charge, and up to 20 hours of long battery life for earbuds (50mAh) with charging case (300mAh).
Professional tuning, powerful bass, and mids, 360° HD stereo sound quality.
IPX7 waterproof protection against sweat and rain, perfect for outdoor sports.
Universally compatible Type-C port, support wired/wireless charging.
BT 5.1 chip, low latency, and more stable transmission.
Connect once opening the case, convenient finger touch control.
Built-in high sensitivity microphone, enjoy crystal clear calls on both ears.
Mini and lightweight with a lanyard, easy to carry.