With silicone ear caps, this earphone is suitable for talking on the phone for a long time and you will not feel uncomfortable. With clip design, it is easy and convenient to carry so you can clip the earphone on the collar.When the phone is 10 meters out of connection scope, the earphone will vibrate to remind you so as to prevent the mobile phone from being lost.Made of ABS material, it is durable and reliable. When a call comes in, the earphone motor will vibrate for reminding so that you will never miss any important calls. Adopting intelligent noise reduction technology, our earphone can provide you with a high-definition call just like face to face. It adopts retractable design so that it supports one-key to retract the headphone cord without tangling.The length of the product is 5.5cm, the width is 2.7cm, the height is 1.5cm.Our product is compatible with most smart phones with Bluetooth. You can enjoy 5-hour continuous talk comfortably without heating of the headset. It supports connection of two mobile phones at the same time for private life and work.Item Name: Bluetooth EarphonesMaterial: ABSModel: F930Bluetooth Version: 4.0Transmission Distance: 10mCharging Voltage: 5VWorking Voltage: 3.7VRated Output Power: 3mWMaximum Output Power: 5mWBattery: Built-in 80mAh Rechargeable Battery(Included)Charging Time: 1-2 HoursTalking Time: up to 5 HoursPlaying Time: up to 4 HoursStandby Time: up to 80 HoursChip Model: CSR8615B04Impedance: 1615 Percent Sensitivity: 95+/-3dBCompatible Devices: Most Smart Phones with BluetoothFeatures: Stereo, Mini, RetractableSize Details: 5.5cm x 2.7cm x 1.5cm/2.17" x 1.06" x 0.59" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Bluetooth Earphone1 x Big Ear Cap1 x Small Ear Cap1 x Data Cable1 x User Manual