1,Wireless dual ear design, left and right ear channels are separated. You can use the headset solely or in pairs. 2,BT 5.2 technology brings higher data transfer speed, more stable connection, and lower power consumption. 3,Supports active noise cancellation. Normal mode/transparent mode/ANC noise reduction mode can be switched. 4,Built-in Mic on both earbuds with noise cancellation function grasp the detail of voice greatly and clearly. 5,Touch control design, no more pressure on your ears. Simply touch the earbuds to control music, call, and activate voice assistant. 6,40mAh battery in each earbud ensures about 5.5 hours of working time (normal mode). Charged automatically in the 500mAh charging box. Features: Wireless dual ear design, left and right ear channels are separated. You can use the headset solely or in pairs. BT 5.2 technology brings higher data transfer speed, more stable connection, and lower power consumption. Supports active noise cancellation. Normal mode/transparent mode/ANC noise reduction mode can be switched. Built-in Mic on both earbuds with noise cancellation function grasp the detail of voice greatly and clearly. Touch control design, no more pressure on your ears. Simply touch the earbuds to control music, call, and activate voice assistant. 40mAh battery in each earbud ensures about 5.5 hours of working time (normal mode). Charged automatically in the 500mAh charging box. Specifications: Brand Name: SONGX Model Number: SX12 BT Version: 5.2andEDR, BLE Transmitting Distance: 10m/33ft (no obstacle) Horn Diameter: 10mm Frequency Range: 20-20kHz Sensitivity: 92dB Impedance: 32Ω Charging Box Capacity: 3.7V 500mAh Earphone Battery Capacity: 2 x 3.7V 40mAh Working Time: about 5.5 hours (normal mode); about 5 hours (ANC mode) Charging Time: about 1 hour (Earbud) Charging Time: about 2 hours (Charging Box) Charging Port: Type-C Material: ABS Color: Black, White (Optional) Earbud Size (Each): approx. 2.6 x 2.3 x 2.1cm/1.02 x 0.90 x 0.82in Earbud Weight (Each): 4.3g/0.15oz Charging Box Size: 6.7 x 5.2 x 2.1cm/2.63 x 2.04 x 0.82in Charging Box Weight: 53g/1.87oz Package Size: 10.4 x 10.4 x 5.5cm/4.09 x 4.09 x 2.16in Package Weight: 188g/6.63oz Package List: 1 x Pair of Earbuds 1 x Charging Box 2 x Pairs of Earcaps 1 x Charging Cable 1 x User Manual (English/Chinese) 1 x Pair of Earbuds 1 x Charging Box 2 x Pairs of Earcaps 1 x Charging Cable 1 x User Manual (English/Chinese) Note: 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.