Experience the ultimate freedom with LENYES R23 WIRELESS BLUETOOTH 5.2 20H 5D. Enjoy up to 20 hours of uninterrupted music and 5D surround sound for an immersive audio experience. Connect effortlessly with Bluetooth 5.2 and experience the best sound quality. Features Transmission distance: 10m Charging voltage: DC5V Talk time: about 20 hours Standby time: about 180 days Version: V5.2 Transmission frequency: 2.4GHz Charging time: less than 20 minutes Music time: about 20 hours Battery capacity: 140MAH Body size: 56 (length) * 25 (width) * 13 (height) mm (including back buckle height 20) Support protocol: Headset \ Handfree \ A2 DP \ AVRCP Headphone*1 Charging cable*1 Spare headphone* 2pcs Instruction manual*1