Connection: Bluetooth Bluetooth Version Bluetooth: V4.2 Operating Range: 10M Connects Two Phones Simultaneously: No Left & Right Cables Type Equal Length Specification: Headphone Style: Unilateral Waterproof Level IPX0 (Not Protected) Applicable Products Universal Headphone Features Long Time Standby , Noise-Canceling , Volume Control Radio Tuner: No Support Memory Card: Yes Memory Card Slot: Standard TF Card Max. Memory Supported: 32GB Power: Built-in Battery Capacity: 240mAh Standby Time: 120 hours Talk Time: 8-9 hours Power Adapter USB Power Supply: 5V What's in the box 1 x Bluetooth headset 1 x Audio cable 1 x USB cable