In-ear wireless headphones MAXELL Bass 13 Sync Up Bluetooth 5.0, IPX4, charging case 300 mAh, 12 h playback, USB-C, built-in mic

MAXELL Bass 13 Sync Up are in-ear wireless Bluetooth 5.0 headphones designed for calls and music. The earbuds offer splash resistance with an IPX4 rating, touch controls and LED power indicators. A USB-C charging case with 300 mAh capacity is included and provides up to 12 hours of continuous audio playback with the case. The single built-in microphone and a frequency range of 20–20,000 Hz make these headphones suitable for everyday listening and commuting.

Advantages

The headphones use Bluetooth 5.0 for a stable wireless connection and feature touch controls and an answer/end call key for simple operation. The IPX4 splash resistance protects against light rain and sweat. The compact charging case holds a 300 mAh battery that extends total playback time to approximately 12 hours, and USB‑C fast charging completes the battery in about 1.5 hours.

Suitable for

• Phone calls and voice chats
• Listening to music while commuting
• Light exercise and outdoor use in light rain or sweat-prone conditions
• Daily use with portable devices supporting Bluetooth

Key specifications

• Driver frequency response: 20–20,000 Hz
• Impedance: 16 Ω
• Bluetooth version: 5.0
• Water resistance: IPX4 (splash resistant)
• Charging case battery capacity: 300 mAh
• Total continuous playback time (with charging case): up to 12 hours
• Charging time: approx. 1.5 hours
• Connector: USB Type-C

How to use

Charge the case via the USB‑C port before first use. Place the earbuds in your ears and pair them with a Bluetooth-enabled device by enabling Bluetooth on the device and selecting the MAXELL Bass 13 Sync Up from the available devices list. Use touch controls on the earbuds to play/pause audio and to answer or end calls. Return the earbuds to the charging case after use to recharge them.

Usage recommendations

For reliable operation, keep the charging contacts on both earbuds and inside the case clean and dry. Avoid exposing the product to heavy rain or submersion despite its IPX4 rating. Fully charge the case periodically to maintain battery health.