Tough Tested V4.1 Bluetooth Headset Earphones | Wireless Neckband Headset with 10x Noise Canceling in-Ear Earbuds and Speaker Mode Wireless Neckband Headset With 10x Noise Canceling In-Ear Earbuds and Speaker Mode Wireless bluetooth V4.1 for longer range and battery life Heavy-Duty rubberized design with comfortable, flexible neckband headset 100 hours standby/10 hours talk time/Up to 20 hours music play time - Noise reduction rating (NRR) of 23db Audio/voice streaming with multiple voice commands: