Product Parameters: Bluetooth Version: V5.4 Range: 10m Driver Size: 11mm Dynamic Driver & HavyBass™Active Noise Cancelling Depth: 50dB Hybrid Noise Cancelling Playtime: Up to 11 hours, the case provides additional 29 hours (ANC OFF); Up to 8 hours, the case provides additional 21 hours (ANC ON) Charging time: About 1.5 hours Case Input: Type-C Waterproof: IPX4 Model: OTW-630 Product Features: Unique Design of Lunar Eclipse Customize Your Voice Prompts Personalized Lighting Effect Smart Chat Mode Wide Area Tap 40-Hour Long Playtime & Quick Charge HD Voice in Calls Immersive Game Mode IP54 Dustproof & Waterproof