This portable X2T wireless in-ear double Bluetooth headset provides you double stereo HiFi sound, you can use them separately or simultaneously.Main Features:● Bluetooth V4.2 wireless connection● Features with noise cancellation and sweat resistance● Multi-point connection allows to connect two Bluetooth devices at the same time● Supports coming calls report and English voiceprompt● High definition microphone brings you a clear conversation● Compact size and light reduce the burden on your ears● Built-in 85mAh Li-ion battery for each headset and 1500mAh Li-ion battery for charging base● Lasts 5 hours continuous playing or calling time for one / 2.5 hours for double use● Offers 120 hours standby time for one / 60 hours for double use● Ergonomic design, comfortable wearing● Coupled with a cloth bag, easy to carry and maintain Features: Portable Function: Answering Phone,Bluetooth,Microphone,Multi connection function,Noise Cancelling,Sweatproof,Voice Prompt Language: English Material: Aluminum Alloy,Plastic Model: X2T Type: In-Ear Wearing type: In-Ear Application: Running,Sport Charging Time.: 1h Compatible with: iPod Connectivity: Wireless Frequency response: 20-20000Hz Impedance: 32ohms Music Time: 2.5 hours for double use Sensitivity: 110dB ± 3dB Standby time: 60 hours for double use Talk time: 2.5 hours for double use Bluetooth: Yes Bluetooth distance: W/O obstacles 10m Bluetooth mode: Hands free Bluetooth protocol: A2DP,AVRCP,HFP,HSP Bluetooth Version: V4.2 Battery Capacity(mAh): 85mAh for each headset Package size (L x W x H): 11.50 x 12.20 x 5.50 cm / 4.53 x 4.8 x 2.17 inches Package weight: 0.211 kg Product size (L x W x H): 1.85 x 1.85 x 2.50 cm / 0.73 x 0.73 x 0.98 inches Product weight: 0.178 kg Package Contents: 1 x Double Headset ( Included Charging Base ), 3 x Pair of Standby Earbud Tips, 1 x USB Cable, 1 x Chinese and English Manual, 1 x Cloth Bag