Specification: Product name: sleep mask Bluetooth Specifications: V5.0+EDR/A2DP/AVRCP/HFP Frequency range: 2.4026GHz-2.480GHz Transmission distance: more than 20 meters Channel: Stereo Speaker parameters: 24 ohms/30mm Speaker power: 10mW x2 Signal-to-noise ratio: 104dB Function: previous song, next song, volume up, volume down, play, pause, answer a call, make a call, activate SIRI, microphone intercom Playtime: 6 hours (tested at 100% volume on compatible with iPhone) Talk time: more than 7 hours Standby time: more than 260 hours (actual test) Charging time: about 1.5 hours ​Packing list: 1 Bluetooth compatible headset 1 scarf 1 x USB charging cable 1 x Description 1 OPP bag Note: The color deviation is subject to the actual system configuration. COMFORTABLE KIDS HEADPHONES: Headband earphones are a great alternative for girls & boys of any age who hate earbuds or struggle with bulky over the ear headphones. The cute headband is fun to wear, washable, and compatible with most devices. VOLUME LIMITED FOR HEARING PROTECTION: The headband is soft and washable, and the thin speakers are limited to 90 dB to protect little ears. No earbuds sticking in the ear, or bulky headphones that do not really fit. KIDS EARPHONES FOR SCHOOL & TRAVEL: The comfy and stretchy headband stays in place and will not interfere with car seat headrest or airplane seats, allowing your child to sleep comfortably while traveling. WIRELESS HEADBAND EARPHONES FOR KIDS: feature convenient usb charging, thin speakers, and bluetooth wireless compatible with most cell phones, tablets, laptops and other devices. HEADBAND HEADPHONES FOR KIDS: Kids will love the characters and colors and won't struggle with uncomfortable earbuds that fall out of place. They can also be pulled down over the eyes as a sleep mask for nap time!