Bluetooth Version: V5.3 Horn diameter：13mm Interface：type-c charging port Bluetooth Distance：10m Frequency Range:2.402GHz-2.480GHz Model No: Slide-out LCD Screen Earbuds Duration: 4H or 10H (with Charging Case) Earbuds Battery: 30mAh Charging Case Capacity: 300mAh Charging time: 1.5H Size: 60 x 43 x 28.6mm Touch Operation： ①Play/Pause：Click (when listening to music) ②Previous song：Double-tap right ear ③Turn on/off game mode：Quad-tap left/right ear ④Answer/hang up：Single click (during incoming or outgoing call) ⑤Next song：Double-tap on the left ear ⑥Start voice assistant：Long press on left/right ear for 3 seconds Colour:black Material:PC+ABS Package Contents: 1 * Charging case 2 * Bluetooth headsets 1 * Charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.