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Professional Stereo Earphone offers top audio performance High quality sound reproduction of Voice & Music In-ear design for comfortable wearing 3.5MM plug fits for iPod, iPhone, or various MP3 and MP4 3 sizes in-ear silicon ear cushion Answering calls and redialing remote Cable clips and velcro fas..

Bluetooth Chip: JL2.1+EDR version Transmission distance: 10M Built-in battery: 3.7V 500mah battery Working voltage: 3.7V (3.2-4.2V) Freduency: 2.402GHz-2.480GHz Charging time: 2.5h Standby time: 60 days ..

Multipoint Bluetooth V4.0 Talk time: 7hrs Music time: 6hrs Charging Time: Arround 1.5 hr HD sound CVC Noise Cancellation Includes: Clip, Neck Strap Weight: 21g Dimensions: 55x25.5x15.2 mm..

Multipoint Bluetooth V4.0 Talk time: 7hrs Music time: 6hrs Charging Time: Arround 1.5 hr HD sound CVC Noise Cancellation Includes: Clip, Neck Strap Weight: 21g Dimensions: 55x25.5x15.2 mm..

Multipoint Bluetooth V4.0 Talk time: 7hrs Music time: 6hrs Charging Time: Arround 1.5 hr HD sound CVC Noise Cancellation Includes: Clip, Neck Strap Weight: 21g Dimensions: 55x25.5x15.2 mm..

Multipoint Bluetooth V4.0 Talk time: 7hrs Music time: 6hrs Charging Time: Arround 1.5 hr HD sound CVC Noise Cancellation Includes: Clip, Neck Strap Weight: 21g Dimensions: 55x25.5x15.2 mm..

Multipoint Bluetooth V4.0 Talk time: 7hrs Music time: 6hrs Charging Time: Arround 1.5 hr HD sound CVC Noise Cancellation Includes: Clip, Neck Strap Weight: 21g Dimensions: 55x25.5x15.2 mm..

Bluetooth: V4.1 Rated power: 5Wx 2 Frequency: 180Hz-20kHz Signal noise ratio: 75db Lithium battery: 3.7V/600mAh Play time 3-4 hours Charging time: around 1.5H Weight: 338g..

Bluetooth: V4.1 Rated power: 5Wx 2 Frequency: 180Hz-20kHz Signal noise ratio: 75db Lithium battery: 3.7V/600mAh Play time 3-4 hours Charging time: around 1.5H Weight: 338g..

Bluetooth version:Bluetooth V5.0 Bluetooth profiles:HSP, HFP, A2DP, AVRCP Frequency response:20Hz-20KHz Effective distance:10m Nominal impedance:16Ω Input:DC5.0V 60mA earbuds DC5.0V 500mA charging case..