If you're not satisfied with the sound from your smart devices speaker while ride bike, pls consider the Bluetooth V4.0 Wireless Bluetooth Speaker. This Cycling Bluetooth Speaker can let you better enjoy music and answering the phone in when you ride on the road.

Features: 
1. 4 in 1 Cycling Device: Bluetooth + Phone Answering + Bicycle Bell + Music Player.
2. Built-in 700mAh Li-ion battery, and could play music up to 4-5 hours when fully charged.
3. Play music via Bluetooth / TF card or 3.5mm AUX cable. Enjoy perfect sound anywhere anytime.
4. Built-in Microphone & Hands-free: Built-in Microphone so you can use as a hands-free speakerphone to make conference call.
5. Superb and high clarity of sound and a built-in amplifier for a surprisingly loud volume. It is the best choice for Cycling, Climbing, Mountaineering or other Indoor & Outdoor Sport.

Specifications: 
- Bluetooth version: V4.0 + CSR
- Speaker unit: 4Ω 5W 
- Frequency: 80HZ ~ 15KHZ 
- SNR: ≥80db 
- Battery: 3.7V 700mAh 
- Play time: 4-5 Hours
- Color: Red, Yellow, Grey

What in the box:
- 1 x Wireless Bluetooth Speaker
- 1 x USB Charging Cable
- 1 x Audio Cable
- 1 x Handlebar Mount Holder

• 4 in 1 Cycling Device: Bluetooth + Phone Answering + Bicycle Bell + Music Player
• Built-in 700mAh Li-ion battery, and could play music up to 4-5 hours when fully charged.
• Play music via Bluetooth / TF card or 3.5mm AUX cable. Enjoy perfect sound anywhere anytime.
• Built-in Microphone & Hands-free: Built-in Microphone so you can use as a hands-free speakerphone to make conference call.
• Superb and high clarity of sound and a built-in amplifier for a surprisingly loud volume. It is the best choice for Cycling, Climbing, Mountaineering or other Indoor & Outdoor Sport.

4 in 1 Cycling Device: Bluetooth + Phone Answering + Bicycle Bell + Music PlayerHLS