oraimo SpaceBuds Lite Sound360 Anti-Lost True Wireless Earbuds. Experience immersive audio anywhere, powered by Sound360 spatial audio. A smart earbud finder and free anti-lost lanyard give extra peace of mind, with an impressive 40-hour playtime. Key Features: - Bluetooth version: V5.4 - Playtime: 7+33H - Charging time: about 2hr - Driver Size: 10mm - Transmission distance: 10m - Waterproof: IPX4 - Material: PC+ABS