Specifications:The headphones will not easily slip off, and it is safe and reliable to carry with.It has ultra-low power consumption and can be used continuously for up to four hours.After the bluetooth-compatible headset is taken out of the box, it can start up automatically, connect and pair automatically, which simplifies the pairing steps.Type: bluetooth-compatible HeadphonesChip: Jieli AC6936DBluetooth Version: 5.0Headset Speakers: = 6 MmHeadset Battery Capacity: 40mAh (Included)Storage Box Battery Capacity: 300mAh (Included)Talk Time: 3-4HPlaying Time: 3-4HCharging Time: 1-2HFeature: bluetooth-compatible 5.0, In-Ear Stereo Headphone, with Charging CaseTransmission Distance: 10m/393.7" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 Pair BluetoothHeadphones4 x Earplugs1 x User Manual1 x Data Cable