LED Display: The charging box of this wireless earphone can display the battery power, so you can easily know when to charge.Fast and Stable: With bluetooth-compatible 5.1, this TWS stereo headset features low delay and can connect with most types of phones and tablets.Useful: This bluetooth-enabled headset supports hands-free calling function which makes it easier for you to answer a phone.HiFi Sound: This wireless earphone can provide stereo sound and HD call, and has noise canceling function.IPX7 Waterproof: This wireless in-ear headphone is not afraid of rainwater and sweat, so you can wear it during outdoor sports.Specification:Material: ABS.Color: black, purple.Charging case size: approx. 8x6cm/3.15x2.36inch.Bluetooth-enabled: 5.1.Speaker size: φ8mm.Earphone battery capacity: 60mAh.Charging box battery capacity: 2000mAh.Transmission distance: approx. ≤10m/32.81ft.Transmission time: about 6h.Charging time: 1-2h.Waterproof level: IPX7.Frequency: 20Hz-20kHz.Total harmonic distortion: less than 0.2%.Impedance: 300Ω.Sensitive: 97dB.Noticed:There may be a little color distortion due to different computer resolutions.There may be a slight error due to different hand measurement.The package includes:1 pair of headphones (with 1 piece USB cable, 2 pieces ear tips, 1 piece user manual).