About this item ? SUPER BATTERY LIFE: RYNDAO wireless Neckband headset battery is a 1000 mAh high-capacity lithium battery,which brings you amazing playback time. It can last 100 hours playing on a full charge and 360 days on standby. If you don't like charging, this neck headphones is definitely your best choice, which is its unique advantage. ? BLUETOOTH 5.0 / ULTRA-LOW LATENCY：The headset has been upgraded to Bluetooth 5.0, which further improves the data transmission and connection stability. The A11's unique ultra-low latency feature, which is not available on 90% of the headphones on the market, makes it an unbeatable experience for game enthusiasts. Just press the "C" key to switch. ? REDUC CALL NOISE & EXCELLENT SOUND QUALITY:This Bluetooth neckband headset has a CVC6.0 noise reduction microphone, which can reduce noise and enhance the sound clarity of calls and music. Wearing earphones to play light music or audio books while sleeping can block outside noise and help you sleep better. ? WATERPROOF MATERIAL/TWO WAYS to WEAR: Neckband headset material waterproof / non-slip / flexible, so that the skin of your neck feel more comfortable.Two ways to wear, with silicone ear hooks headphones will be more stable, suitable for sports;without ear hooks headphones will be more lightweight and comfortable to wear, suitable for leisure time to enjoy. ? PACKAGING & SERVICE: Bluetooth neckband headset in addition to providing a sturdy packing case, we are also equipped with a delicate storage bag. It is more convenient to store and carry outdoors or when traveling. We are committed to providing customers with 100% satisfaction on product quality and service, so please rest assured to buy, if you have any concerns, please consult us at any time.