Features:
BT 5.0 technology ensures stable and fast connection, higher data transmission speed, and low power consumption.
True wireless dual-ear design, left and right earphone channels are separated, can be used separately or in pairs.
High quality technology allows you to hear the minute details in music clearly, providing realistic HiFi sound quality.
Environmental noise reduction, provides clear communication quality even in noisy environments.
Ergonomic design, fit the ear canal, bringing comfortable and stable wearing experience.
Built-in lithium battery provides long endurance time, 250mAh charging case can charge and storage the earbuds, more convenient to use. 
Specification:
Brand: Lenovo
Model: LP1S
Color: Black/White(optional)
BT version: V5.0
Speaker unit: 10mm
Frequency response: 20Hz-20KHz
Waterproof level: IPX4
Play time: About 12 hours
Battery capacity: 250mAh(charging case), 40mAh(earbud)
Compatibility: iOS/Android/Tablet
Charging case size: 5.9 * 4.4 * 2.2cm /2.32 * 1.73 * 0.87in
Packing list:
1 * Pair of earbuds
1 * Charging case  
1 * Charging cable  
2 * Pairs of silicone earplugs 
1 * User manual