I10 TWS Bluetooth Earphones Wireless Bluetooth 5.0 Earbuds Touch Control Siri Headphones for Smartphone Not Including Wireless Charging Pad BUY IN BULK AND SAVE Feature: 1.Advanced Bluetooth 5.0: Bluetooth 5.0 technology provides a stable wireless connection to your smartphones and other Bluetooth devices. There are no wires being tangled and earbuds can fast pair 2.Wireless Charge: When you put earbuds in charging case, it will be charged automatically, which is convenient for your next use. 3.Intelligent Call: Both earbuds could call and listen to music, and touch the left earbud could answer the call. 4. True Wireless Earphones: Built-in TWS (True Wireless Stereo) technology, HD and sensitive microphone, it will enable a clear calling experience and high-quality music sound. Superb stereo sound, and bass will provide for an enjoyable music and movie listening experience. 5. Portable Charging: Hands-free earphones with a built-in battery will provide up to 4 hours playing time. A mini and portable charging case will support recharging of your earphones up to 5 times. Meanwhile,the charge box could show the power. 6. Stable and Comfortable: Ergonomic design for Sport, Workout, Running, Jogging, Hiking, Biking, Gym etc. Specification: Speaker impedance: φmm 32Ω ± 15% Sensitivity: +-40DB Wireless frequency: 2.405GHZ-2.480GHZ Battery indicator: rechargeable polymer lithium battery ma*2+500ma Working temperature: -10 -55 °C Power: DC5V Material: PC+ABS Support file formats: A2DP, AVRCP, HSP, HFP Wireless distance: 10M or more Play time: About 4 hours (charge box can charge the headset 5 times) Charging time: 1-2 hours Standby time: 400 hours Package: 1x Headphones 1x Manual 1x Charging Bin 1x Charging Cable